A lot of the claims were either debunked or proven by Seth to at the very least not be concrete (as-in, he argued against them and they weren't proven to be factually true). The main one was the grooming thing which, if I remember correctly, was proven incorrect, but I could be wrong. However he still said and did heinous things that go a bit beyond being edgy and was 1000% a bit of a cyber-bully that harassed people. Joking about a depressed minor who considers you a close friend killing himself and insulting him daily isn't cool, obviously.
In the end though, he's just a bit of a bully. I don't think people like that should have a platform, but oh welol.