Toxicity is an integral part of popularity.
If you have 10x more people - there's a 10x the chance that you'll get a person who is unreasonable. At some point, it's just inevitable that you'll chance yourself into several of them. That's just math - and math is inevitable.
It's the same for streamers, for singers - and their live events, for actors, and so on.
I don't see any more toxicity on this site, then in any other community. In fact, my personal experience is saying that it's way less toxic than some other places. Maybe cos people are not really pent-up in here.
So the only way to not stumble into unreasonable people: is to stop being popular.