They're already on the fediverse. Tens of thousands of people on thousands of servers saying things that make libsoftiktok and gaysagainstgrooming look like woke hippies.

The thing is, unlike big tech which wants you to see things that piss you off because it drives engagement and will actively put you in that situation, for the most part people tend to stick together in groups. You'll get the odd troll looking for a thrill, but overall there isn't an algorithm doing the Jerry Springer thing so other than a cheap thrill there's no point to it.

Algorithms end up being really sneaky in that regard.