I'm not sure what the word for it is, but I think the big problem with Reddit is that it's largely the most mentally stunted and deficient people who become moderators, and then those people, with their toxic culture and mental problems, make everything else cancerous. Smart, intelligent, well-balanced people don't typically waste their time moderating online communities because they're usually busy doing things like raising a family, running a business, learning a new skill or exercising. Things most Redditors know little about.

Unfortunately, like Plato once said, those who refuse to participate in politics, or in this case forum moderation, end up being governed by their inferiors. So now the lunatics are running the asylum.