I don't really see anything toxic. Unless you go to different instance which has certain reputations. I didn't realise I was in a tankie instance because I have all instances appear on my feed. I am still accustomed to Reddit just being managed in one site and occasionally stumble into communities full of morons. But since, Lemmy is still has not got much people, I can still spot communities that are toxic because I have seen them before, unlike in Reddit where multiple subreddits appear but serving one ideology or interest.