I think that the fundamental problem with the downvote, pretty much anywhere that has it, is that it's physically structured as being the inverse of an upvote, and then there are some community guidelines saying, "This isn't actually the inverse, it has some additional semantics associated with it." In SO's specific case, the problem it's ostensibly trying to solve is indicating that the question, as asked, needs wor…
In my view, if you think a question needs work your first option should be to leave a comment, and your second should be to edit it yourself to improve it. If there isn't time in your busy schedule of bludging at work for either of those then maybe consider just ignoring it?