Having the choice between "unwashed masses" and "curated to suit political agenda" I would firmly choose the former.
Before I get attacked on political agenda angle, please understand that it takes trained professional actively trying to remain objective to have impartial moderation. Many professional discussion moderators fail here and you just cannot expect neither unpaid volunteers (doing things out of passion which is not impartial in the first place) nor paid employees enforcing company policy (again very much partial) to remain objective.
The goal of moderation should be to allow for multiple angles of thought to emerge and not get drowned. Give me the tools to see those non-mainstream positions.