This claim keeps coming up that "hate speech" isn't allowed and isn't legal. It is kind of funny to read since legally no such thing as "hate speech" exists. SCOTUS has carved out only a few exceptions to free speech. The one relevant here is "fighting words" and it doesn't apply since saying "all $X-attributed people should be killed" is LEGAL. It does not CAUSE immediate harm. But, saying that to an armed angry crowd MAY be illegal. Websites, at least how SCOTUS saw it, cannot by definition be fighting words and thus anything you say on a website would be protected under 1st amendment
This doesn't matter much, of course, because the amendment only applies to government shutting you up, not a private entity.
BUT, I hate how all of these bozos keep making the excuse that these websites wouldn't even be protected by 1st amendment so they can be banned from the internet. This article does this too. It is annoying since this basic premise itself is wrong.