I personally think so. As far as the Pokemon company is concerned, 6v6 is a casual format and nothing more. And as far as I'm aware, there's no Smogon rules in Japan, so they'd be used to 3v3 singles and the official 4v4 doubles formats. A lot of English speaking countries tend to prefer Smogon formats, but they're also not the whole playerbase, so they can't account for everyone. People need to reliase that the Pokemon Company will pretty much never acknowledge Smogon and its rules officially, regardless of it they want them to or not.
I remember, since I started playing Pokémon online in Generation IV via
Pokémon Battle Revolution, that Japanese players took to double battling, as well as 3-versus-3 and 4-versus-4 rules, really well. We've gotten to the point where there are now team from Japanese players adapted very much for those rules, such as ones consisting of 3 support Pokémon and 3 primary Pokémon, where the primary is chosen based on the opposing team seen in Team Preview. Such a team wouldn't work playing as a full team, as the support Pokémon would get wiped out faster than the others.
I've also noticed Japanese tiers are fairly different due to them following the official rules near-exclusively. Pokémon like Excadrill and Greninja are as much of a nuisance there as they are in the Anglosphere. However, they don't deem Ice as that weak of a type, for instance, and Gardevoir has seen frequent use for the past few generations, Mega Evolution or not.
This.
Smogon is a fan site that does a good job helping people with strategies and stuff but their word shouldn't be absolute and shouldn't be the standard for battle formats and official competitions.
Some strategies work, and some don't. The biggest thing is that there is a lot less switching under official rules. As a result, counter-switching strategies, like entry hazards and Arena Trap/Shadow Tag, are more of a niche strategy in the main games themselves, rendered impractical against the majority of opponents. That's because there is a lot less switching done due to switching being riskier.
Earlier this month, for instance, I encountered someone using a Skarmory using the classic Stealth Rock, Whirlwind, Body Press, and Roost moveset. I just took it out without breaking a sweat because with fewer Pokémon, it's more likely Whirlwind will drag out something able to deal big damage to it. Dynamax/Gigantamax also serves to put a halt to this strategy (though I didn't need that to get rid of Skarmory).
Event raid dens. I’m so sick of these now. The events last way too long and they end up taking over so many of my dens. At the moment 4/5 Wild Area dens and 4/7 Isle of Armor dens are these. I don’t even want to do the raids in the Crown Tundra because if I clear them all and it creates new ones I’m certain it’s just going to flood there with the event ones too. I really wish there was a way to just get rid of them entirely so I wouldn’t have to bother with them anymore. Outside of the special events that last a weekend, I have no reason to do them so they’re just a waste of space.
A workaround is to join other people's Max Raid Battles, if you're able to at least. When you do, one den from that area (Wild Area, Isle of Armor, or Crown Tundra) will vanish with the exception of rare dens, which never contain the event dens.
That being said, sometimes I go do the event raids anyway because they often give out a higher EXP Candy payout than normal ones, though they don't hold a candle to the Chansey, Blissey, Audino, and Delibird ones.
I completely forgot about this, but I feel like I should mention it. Smogon formats would also sometimes expect you to have moves on a Pokemon that are very hard to get on cart these days, so building them in game would be a very difficult task. Examples include the infamous Wish Chansey or Eruption Heatran. This can get especially bad with event only moves with some of them being long expired by now, meaning very few would have legit access to them.
Honestly, the more I think about it, the more I think it's better transfer moves can't be used in official formats these days. It would surely grind peoples gears if they were allowed, but only an event only move makes them viable, and since those a very hard to get hold of, especially these days, it would really annoy others.
They use simulators rather than the official games, so they can just generate them at will and they don't have to be concerned with how difficult it would be to have it in the actual games. I wouldn't be surprised, however, if the decision to not allow transfer moves in for Generation VIII is as much an effort to lower the barrier of entry as it is an effort to nerf some Pokémon in a subtle manner.
While I understand people's gripes with Smogon (trust me, as someone who's been playing with their rulesets since Gen 5, there is a lot of elitism and room for improvement), I feel like their presence is vastly overexaggerated. For one, it's just as common to see someone write off playing by Smogon because it's not official as the opposite. The amount of vitriol people have when Smogon is mentioned when discussing competitive is astounding to me. The same "my way or no way" attitude is found in the VGC community.
It's also ironic how a common criticism of Smogon is how restrictive it I feel they encourage more variety than VGC ever has/will. The tier system helps you use something that's not top tier in a less powerful tier so it can strive. You can actually have something prosper in a tier where it's not overshadowed by an objectively better Pokémon. There's also a tier literally called Anything Goes if you don't want to be restricted. There's also a lot of fun monthly metas that make underappreciated Pokémon get spotlight. I like this approach more because the meta shifts monthly and there's so many weird dynamics that come from it. Contrary to popular belief, there's not that much of a definitive Smogon moveset for most Pokémon because they might change their movepools to accommodate new threats. Some people also forget that Smogon has Doubles formats too.
People can play whatever they choose to but the elitism is apparent everywhere and it confuses me that Smogon gets this image because people generalize from a few players. More than anything, I hate the mindset that Smogon makes people stick to certain playstyles when that's more so people who don't want to experiment and just copy sample teams. You'll find try hards like that in every format (looking at Coalossal & Indeedee teams in Gen 8).
It's not so much that I don't like the way Smogon approaches Pokémon battling so much as there seems to be some very vocal groups that drown out the main games' Ranked discussion when it comes to Pokémon battling. There's a lot of talk online like it was the default when 4-versus-4 double battling is the real default setting (with 3-versus-3 single battles as the secondary setting), with no full-team modes except in private rooms. It's hard for me to figure out trends in the Ranked modes in the official games because there's a lot more talk online about battling with Smogon rules; I mainly do it by playing a bunch of Ranked myself and observing carefully. Even here on Serebii, there isn't really a discussion group centered around Ranked, and advice seems to assume single battles with full teams. (As a Johnny type player, I use only Pokémon that are not seen very often, so it doesn't bother me much--if I want to see a particular Pokémon, I put them on a team.)
Not to say I don't benefit from this--I can't help but smirk when I play a Ranked single battle online and the opponent wastes their first turn throwing out Stealth Rock thinking this is a universally good move in this format.
That being said, one thing that does confuse me is why there isn't more adoption of the pick-3/pick-4 rules. Is it inertia, or did some people find something wrong with it? The official rules and the Smogon rules are diverging more and more with each generation, and accusations of Game Freak not understanding balance might stem at least partly from playing using a set of rules that they were never really meant for. (I mentioned it before, but I still find them as good examples in that Galarian Darmanitan and Dracovish are not considered overpowered in the official Ranked rules for either single or double battling. They're both deemed very strong but not at the top.) Then again, Game Freak could also help with that by having a more doubles-centric story mode. The last time we had a Pokémon campaign with double battles being the primary means of battling was in Generation III, which is over a decade ago. I don't blame people for wanting to play competitively using the set of rules they learned going through the story.