I agree with the crux of your message about hate, but I agree less about the practical part about Twitter.
LibsOfTikTok didn't start out on 4chan or 8chan or anywhere else. She became Twitter famous making fun of people on Tik Tok. Then she leveraged her platform to attack Pride events this summer. Then she started attacking children's hospitals.
The fact that she reaches millions of people on Twitter is real. It's not just an academic discussion. Twitter could easily, trivially ban her for a pattern of speech that consistently and frequently elicits violence in the real world.
If Twitter chose to accept that responsibility, violence in the real world would actually decrease, even though people would remain as potentially hateful as ever.
The problem here is not so much the potential for human hatred as it is about human beings choosing not to take practical steps to counter the effects of that hate.
If Chaya Raichik were relegated to 4chan, or BlazeTV, or Gab, or wherever else, the toxic effects of her hate speech would diminish dramatically. That conclusion is pretty inescapable from what we've been seeing this year.