That makes no sense as it’s not the trainers that decide how the rules work. Also even if there are special rules it makes no sense for Ash to have to waste his time doing the Gym Challenge and beating the Galar League which would mean he has to fight a bunch of trainers that aren’t even in the PWC.
This all started when I said if it was possible if the Galar Gym leaders would just give Ash their badge for winning their PWC just as a nice bonus, which could then allow
There could also be a clause that states that the Galar Gym League Conference, requires an additional rank of PWC inclusion to be counted, especially since we assume that the anime implied Leon actually defeated the anime Galar league, since PWCs seem to heavily been Galar inspired (even if it was mentioned earlier than 8th generations) the structure takes heavily Galar inspiration especially with Leon, and thus the Galar league could require PWC ranks to enter as well as gym badges, to show that you've defeated the 8 Galar gym leaders who will clearly have PWC. ***NOTE*** For PWC rank you just need to register, I'm not saying you have to have a high rank to enter
This isn't like Lt. Surge having his own PWC rank retconned after the badge. This is a concept of a gym leader having a PWC at the exact same time as having a gym badge. In fact it might be a rule that Galar gym leaders can only give badges to PWC challengers, because again if you're going to have badges introduced at the same exact time as ranks, and NOT a retcon, it's really hard to separate the two.
At least prior to generation 8, the other regions had excuses, but they shook way too much with this, to reasonably believe that a Galar gym leader could be separate from PWCs. It works for other regions, not quite the case with Galar and the way its set up, especially since Sword and Shield don't even have the concept of an Elite Four, just champion Leon.
Also that trainer could just keep making up excuses as to why Ash can’t challenge them. If anything if there is a special rule about ranking up to the next class it’s probably has a clause that says the trainer in 99 rank position or a similar position have to accept the challenge of the person trying to rank up into that class and if that person in the 99 rank position or similar position refuses to battle it will be treated as a automatic forfeit.
Really what your saying would basically make the person in the higher position just decided to be a jerk.
Given we're talking about the last rank of a person in a class, that they will be out of the class, I do think they should reserve special rights to deciding who battles them, the same way a gym leader gets to decide who gets to battle them (through some kind of test) or even the Island Kahuna's would you need to do a set trial to be approved a battle.
The test in this case, is winning the Galar league. Don't you think if you're the last ranked person of a high class, that you should be able to prove the person is worthy of usurping your rank through some kind of challenge, after all you will lose that rank and you will be dropped in a lesser class if you lose, you should reserve the right to prove that person deserves to challenge you to begin with, to show that they have what it takes to earn the right to battle you. You wouldn't want the weakest Rank 100 trainer battling you and somehow defeating you by random luck/chance, and then lose your rank, do you? Or do you want someone who can possibly get much higher in the ranks?
So in other words do you want to lose your rank and class against someone who barely beats you, or someone who has a chance to climb much higher than you?