[rabz]

The only subreddits in my experience that approach this "professional," disinterested standard of moderation are /r/askscience and /r/askhistorians. I know AH has a huge team devoted to enforcing their rules, and it's off-putting to newcomers from other subs but absolutely makes AH what it is. AS takes more of an unapologetic scorched earth approach to keeping focus on relevant discussion.