My guess is the title: "watch____die" triggered some automated stuff in Discord, then either they don't have an actual human check on that stuff or they didn't do their job properly.
I'm in Discords that I'm 100% certain companies would like to see shut down, but afaik Discord will only remove proper cesspits involving actual crimes. Blatant piracy, CP, that sort of thing.
I don't really care for right-left, especially in a situation like this. Anti-reddit shouldn't be right vs left. It's great if we can find equal ground.