Because people like to make wild speculations based on nothing.
I think its more that people need to stop having these ridiculous assumptions that they know how this series is going to work exactly.
We literally know NOTHING about how this series is going to work. Therefore technically everything is on the table.
And until we at least have some kind of consistency, or something with less chaos, its going to be impossible to know what they are planning.
Like let's just make an assumption right here: Ash will only catch Galar Pokemon.
You see that would make sense considering all the other series that took place in a specific location, Ash caught Pokemon of that generation.
But until they decide to stick with a region, that's not going to be the case here in this series because of what this series appears to be about. It would be extremely weird if Ash ONLY caught Galar Pokemon of the few times he goes to Galar, ON TOP of that it would be weird to have Ash take his Galar only Pokemon to every region in the world.
There likely has to be a mix of Ash catching other regional Pokemon or using other regional Pokemon while also using Galar Pokemon so as the series doesn't feel disjointed or weird, Ash would likely need to battle Gyms right, and Ash is going to be battling because he did specifically he said he wanted to become a better battler.
But then your argument is: What if Go exists so Ash doesn't capture Pokemon, there's no need for him to capture Pokemon, right?
Then Ash would have no choice but TO use his older Pokemon because I highly doubt Ash is ONLY ever going to battle Pikachu. It would get boring FAST, and I would not be a fan of that, I don't think anyone would be a fan of Ash using only Pikachu for over 100 episodes.
So what is it? What will Ash's purpose in the show? His Pokemon?
Exactly! WE DO NOT KNOW. BECAUSE WE KNOW NOTHING ABOUT THIS SERIES.
It is SO different than any other generation, how could anyone think "Ash won't use his past generation Pokemon" is a valid speculation. This isn't 1st generation to 7th generation. Though to be clear in certain episodes, Ash did use his older Pokemon. HINT HINT HINT. Like Battle Frontier or even the Sinnoh League. And Ash did bring back his Bulbasaur to meet May's Bulbasaur. So is it really even a valid argument/speculation to even begin with? Only in the context we don't know what's going to happen, but that doesn't automatically invalidate speculation that Ash WILL use his past generation Pokemon.
We literally just don't know. The formula as we know it, completely erased the moment they confirmed they would travel to all the regions. The formula was also erased when it was confirmed that the Sakragi Lab would act as a homebase for Ash and Go. There's literally nothing about the past generations that we could even remotely apply here in sort of semblance of any clear formula. You have stories, and characters, and that's it. Anything else is just a random guess.
I mean the Mysterious Garden already proves that they are bringing past stories back to the anime. Since that was exclusively only for Ash's Bulbasaur, especially since it was never brought up (except maybe a flashback in sun and moon maybe, is that what's being said).
Why bring back the Mysterious Garden or the elements of Bulbasaur evolving, if it wasn't some huge implication there would be some continuity brought to the series? Especially with all that traveling to all these regions, there would inevitably have to be some crossover at some point. Galar would be the only real region they could do whatever with.
But if say 30 episodes of this series takes place in Hoenn, how could they get away with having 30 episodes, but not even remotely touch ANY of the elements Ash did when he was in the Hoenn Region. No gym leaders, no same locations, no character of the day. Can you really sit there and say that Ash going to Petalburgh City, that he wouldn't run into Norman, Caroline or Max, at all, conveniently or they wouldn't be mentioned at all.
At the very least they could only get away with it by making this series a reboot. If its the same Ash that we've always known that's going to be an impossible feat to pull off. It would have to ultimately be the BIGGEST stretch ever by the writers. Especially with the Ho-oh episode.
