Have you listened to the Jamie Loftus podcast on mensa?

It demonstrates both ends of the argument beautifully. Very insightful show; I hated the presenter afterwards but I think her insight would mesh well with your point of view.

I don’t think trolls are in any way relevant to the moderation debate. People have the right to be stupid and other people have the right to talk shit about opinions they perceive as stupid. If you don’t want someone who potentially is going to shit on your opinions don’t post those opinions on a public forum.