[salawat]

What I'm saying is bullies gonna bully. With or without Facebook's help. The only thing that keeps it in check is everyone else. Facebook is undoubtedly part of the problem, but I don't see Facebook serving ads "how to more effectively troll", "go on, doxx your friends", "hound someone to suicide".

No, that's a case of problem existing between keyboard and chair independent of what websites are visited. You can argue Facebook makes it worse, but then you can't realistically stop there. Every platform does that doesn't moderate to some $subgroup's liking.