[mnicole]

Like a commenter upthread mentioned, I think it's a combination of that and people upvoting names they recognize or that the community knows as/sees as "voices of" the community. They just take their word for it given past posts, rather than having it occur to them that maybe this topic isn't actually their forte. Additionally, someone taking the time to write out rebuttals just to be downvoted and "told off" with pointless and degrading one-sentence rebuttals is pretty pathetic.