Are questions like my latest one about The Borg unanswerable because there is not enough data to answer? Is "We don't know there isn't enough information" not a good enough answer?
In most cases, there is something to say: “episode 12 shows that the minimum is 42, episode 33 hints that the number is in fact in the millions” — this sort of thing. Sometimes “we don't know and the authors meant to leave this ambiguous” is the right answer. No matter what the answer are, in- or out-of-story evidence is preferable. If the answer is “we're never told and the author never revealed it”, so be it.
Anyone who claims it's "unanswerable" about a recent work (espeically a TV show) is just lazy. You can always expend the effort and go contact - in real life - the work's creator(s).
"We don't have enough info" is an answer, as long as it cites where and how specifically the answerer searched.
"It should be closed because it's unanswerable" is most likely a false statement (again, 100% false if any of the creators are still alive)