Well I just recently dropped out of this community and it would be the Animal Crossing Community. I mean for a community that is so called "Chill" it still has fans who will still defend their games even if it has flaws that they refuse to admit it. I can't tell you how many times I've gotten attacked for basically giving my honest opinion how I felt about New Horizons when I said how I thought the game was great but still had flaws. Not saying that all AC fans are bad but man I got attacked so much for even sharing flaws that the game had.
I swear some people in that community can be toxic sometimes. Again not saying all AC fans but those others who always say "oh stop complaining about the game" or "oh stop being so negative" are the most toxic I've seen. People are free to express how they feel about the game. If you disagree that fine as long as you respect their opinions. I swear I feel like I get attacked so much for having a different opinion, no matter what I say and how I get treated. I am glad I left that community because it was starting to affect me mentally. I still like Animal Crossing but I don't think I'll be apart of that community again.
I've run into that via a non video game community. The L and O SVU one. There's quite a bit of toxic positivity there. People that don't like when others have their own opinions that counter their own.
The Pokemon community is something, I generally just play the games, but seen enough people who complain and nitpick to high heaven.