I logged in for the first time in months a few days ago and it was mostly angry memes, a surprising number of which were celebrating violence and murder. This is despite me aggressively muting people who post that sort of thing.
I hope they find a niche, but the cultural damage may already be done.
If you are forced to see it despite spending most of your time silencing it, it's not the people you follow it's the culture.
Judging from the CEO's letter and actions, it sounds like it's possible a bad culture example was set by the top of the project. Although that doesn't always happen. For example, Linux doesn't have a culture of over-the-top personal insults despite that being Linus's personal style.