[yesenadam]

Absolutely not! Some of the best discussions are inspired by the worst posts. Short, misinformed, badly written blog posts not worth reading in any way can set off lengthy, fascinating discussions on here. People frequently wonder aloud why on earth the posts were upvoted, but it's the discussion that's upvoted—the votes are apparently to encourage more comments, where the comments already present were very good reading.

More useful, though still not a good idea, would be requiring commenters first to read the other comments, as often a comment repeats what another has already said—although with hundreds of comments, this becomes increasingly impractical.