Reasonable people disagree about what is or isn't valuable in music theory. For example, some musicians like to think about music in terms of scales and modes, while others don't. Some musicians find these categories useful, while others don't. These preferences are largely personal and subjective in nature, and one such preference isn't objectively better than another.
Unsurprisingly, some people find certain questions to be lacking in value. For example, this question asks what scales to use when improvising over a particular chord progression:
What scale(s) can I use?
I've just come back from my jazz workshop and the lines I played over a G7 C7 G7 D7#9 Eb7#9 D7#9b13 G7 progression were ok, -ish. When asked, our teacher told me to try dorian scales, over mixolydian and altered chords. What is your angle on this?
This answer states:
You're not really asking the right question! It's taking a narrow, inward-looking, mechanical approach to a wide topic - how to play good jazz.
It's often a good idea to find a song using the chord sequence and see what the original melody was. That may well be the BEST thing to play over that sequence. And I bet is isn't just scales.
I wonder if this is an acceptable answer. Perhaps one would argue that this type of answer is fine when the asker explicitly states his/her goal. In the example above, we can imagine the asker saying "I want to improve my improvising, which is why I'm wondering what scales to use." If this were included in the question (or if it has been sufficiently implied), then perhaps it's acceptable to answer the question by saying, "thinking about scales won't improve your improvising."
But this type of response amounts to commentary about the question, not an answer to the question. Answers that explain "you're asking the wrong question" are essentially arguing/asserting that the question lacks merit or value. (Then they often continue by answering a very different, far broader question like "what will improve my improvising?") My understanding is that people who think a question is not valuable should downvote the question and perhaps leave a comment, not post their disagreement as an answer. The purpose of answers, as I understand, are to answer the stated question.
Am I thinking about this the right way? Is "you're not asking the right question" an acceptable answer?