While that's certainly a valid concern, I fail to see (1) what answers this post expects to get (i.e., are we abusing the Q&A platform as a forum?) and (2) how this would help users of the main site (are we hoping it shows up in the hot meta questions box in the sidebar?).
By the way, non-answers are probably the easiest posts to review, in my experience, at least when it comes to flagging. Not sure how much work it is, from the moderators side, to convert them into comments, but I'd expect SE to have mechanisms to facilitate this kind of action.