The most toxic communities I know of are the Genshin community, Payday 2, FFXIV and source games communities in general.
100%. I stopped playing a decade ago, but when I played I was always amazed at the behaviour it brought out in people. I would watch people who I considered friends IRL turn into abusive jerks when I played with them. It’s this weird prisoner’s dillemma of a game where the psychology of the game appears to encourage ganging up on the weakest player.