I just had my first look at the flag queue. And, of course, I want this tool not to lose any quality by my contribution. And now even the first post I am shown turns out to be difficult:
I do understand why this has been flagged (which is not the same as agreeing...). The answer is so general that it is hardly useful. And it contains comment elements ("I need more info"). But the flag text says "It does not even try to answer the question" and that is clearly not the case here.
I think that not deleting but the voting system is responsible for handling rather bad answers. But what is the community concensus on the case of doubt: Leave a low quaility answer (which has a suitable voting) or throw it away?