Eh, given the nature of a community, whether it is the best or not is just going to be anecdotal.

Communities have a wide variety of people and a wide variety of sub-communities and cultures, so really it's no more toxic, and no more better than any other community.

Given the right circumstances you could literally claim any gaming community is the best ever -- Similarly, you could make a pretty reasonable claim that any gaming community also has the worst ever. Just depends on personal experience when you're dealing with communities this large. Sometimes it just seems like people feel so invalidated if someone has a different experience or opinion.

On the note of Asmongold, personally, I chalk it up for a variety of reasons. He's a very large figure in the streaming and MMO space, so his swapping would have accrued a lot of new audiences watching who aren't entirely familiar with how he actually streams, and what he dedicates his time to when streaming, e.g., react content. Personally, I don't care, I just stopped watching outright after a certain point - But I can understand why it would probably aggravate people.