The biggest issue of your arguments is how relentlessly cynical they comes off even if there are a few solid points.
I know I'm being extremely cynical on this subject, and I'm doing it on purpose, because honestly of all the various weird things I read, it's the one I think is the most pointless, because it doesn't make sense on logical standpoint (hence my checkers comparison).
League of Legends have this problem because it adds too many things too fast, resulting an absolutely bloated game for it’s own good. While the game itself is still popular after all these years, it’s because the metagame evolves so quickly since the devs reacted fast enough to nerf OP newcomers. While a vicious cycle, they have a decency not to make newcomers too OP for years. That is not the case with Pokémon, where we have to wait until SV for Zacian to be nerfed, and there is no stat redistribution on blatantly overpowered Pokémon like Palafin, the Paradox Pokémon and most of the Treasures of Ruins even after the DLC is released.
Incidentally, while GameFreaks does not patch aggressively as live services do, they have been instead opting for gradual introductions of pokemon in metagames while also gradually adding more via either raids, Home, DLCs.
The purpose is the same: you need to keep shaping up the meta, otherwise you end up in same scenario that Overwatch faced, where due to slow, passive patching, you have 6+ months of stale metas where people just get progressively more bored and abandon the scene.
We may likely see more on this subject from GF/TPCI in future, as we all know, their purpose is to make VGC a real esport and not just a meme, and they're slowly making steps toward them.
There’s also accusations of P2W within Pokémon, which is running rampant back in SwSh’s DLC, and happened right now via Ogerpon, alongside HOME shenanigans. And with the ridiculous power creep caused by Gen 9, and even back Gen 6 and 7 with obscenely OP Mega Evolved Pokémon, all it’ll succeed is to make matches even more stale, not make them less.
The P2W shenenigans regading DLCs are a joke and anyone making them should be ashamed of themselves.
The only *legitimate* complaint is the fact that reg D and E allowed transfer-only non breedable pokemon which require older games, that is a legitimate complaint and something I sincerely hope they learned the lesson about. It had not happened since the inception of "current gen only rule", and it should have stayed that way.
But for the DLC part, I don't quite recall people being smadge about needing ORAS to play, I don't recall people being this mad about needing USUM to play. People are being *so* dumb about it that they don't realize that in fact the DLCs cost half of a full game, and if we were still in "2nd version" era, you'd be paying 120 bucks instead of 90.
Owning the DLCs is just the same as owning the last games as is. Just happens to be dlcs of a game and not a entire separate entity that you have to play through AGAIN despite it being almost identical to the predecessor (i'm looking at you USUM).
A player being requested to own the latest version of a game to be able to partecipate efficiently to VGC is a fair request. That's how every competitive game works, and as I pointed somewhere else, you don't see Smash players calling DLCs P2W (assuming the scene hasnt got killed yet), you don't see TCG players complaining of new card expansions making old ones obsolete, etc.
What is NOT good is requiring you to not only own "the gen 9 games", but also several gen 8 ones. That we can agree on.
One last thing is that going as far as telling others to not bother with balancing, period, rather than just tell them this thread is not the place for balancing, is a way to kill the others’ joy. You have the right to complain, but if you go to an extent to tell others that there is no point of rebalancing something like a game with +300 Pokémon despite knowing how many non-competitive people disliked overtuned ‘mons and how much they dislike shitmons, that is just being selfish to a fault.
I will just say that if it was a "once in a while" thing, it'd not be this obnoxious, but you can notice how frequent it is. Almost every day there is someone "trying to fix a pokemon" in one of the threads. And it's pointless. We can't do it, and even if we could, people always fail to see the result, aka, for a mon you buff, another becomes useless, but rather hide behind the illusion that you can "balance" 1000+ pokemon forms and make them all equally viable.
Once more, to the point of boring myself, checkers does that. Every pawn is the same.
Chess doesn't and I don't recall chess players asking for pawns to be able to move same as the Queen do you?