The below question was put on hold for being off-topic, but I personally don't see any issue with it:
may invite speculative answers, as the question is not fully defined.
Sounds like a possible definition of the word
riddle to me ...
I personally don't see a need for the OP (or anyone else) to rephrase the question, because I think it's fine.
I just don't think a puzzling site should be "policed" this heavily. Other StackExchange sites, sure, but this one is special as it's speculative by nature (that's the whole point).
Questions may need improvement, sure, just say so. Putting it on-hold is not really going to solve anything. Now this question is basically dead weight. You can't get new answers validated, find out the intended solution, ...
Questions that are off-topic or otherwise inappropriate, should be handled, ofcourse.