In the early days it seems pike Stack Overflow tried to regulate engagement from trolls. They encouraged support for dumb/newbie questions and discouraged obnoxious behaviors.
I’m guessing that’s just a losing battle. I don’t think there’s much hope of keeping a good moderator for free. It’s a tough, thankless job. Troll/poor moderators are free.
General rule amongst those groups: “If you can’t be good, be loud.”