I think HN is one of the better ones these days. I have no data to back this up, but the comments aren't like reddit comments. Go into any reddit post on the main subs, and you won't have to scroll very far to get a comment about Trump derailing the whole thing.

Digg's recent shutdown message talked about how bad and aggressive bots were. I'd love to see Kevin and Alex post in depth about lessons learned, Dead Internet, and call out social sites.