How is this question opinion-based? ("May I have a mango!" is it an Imperative, Optative or Interrogative sentence?)
There is nothing that seems inherently subjective about it, nor does it look particularly likely to inspire opinion-based answers. It's a genuinely interesting question, made the HNQ list, and it has an excellent, fairly-highly-upvoted answer. (I'm aware that reaching the HNQ doesn't necessarily indicate quality, but it feels like most hot grammar-related questions do actually deserve the visibility.)
In review, it got one VTC and two 'leave open's, but it was eventually closed outside of the queues. It's being reviewed for reopening right now, but I'm more interested in why it was closed in the first place. (Comments were locked for a while, so there aren't any clarifications to be found there.)
- What makes it opinion-based?
- If it was indeed opinion-based, would it have been salvageable through editing?
- What questions should we reviewers be asking ourselves to determine subjectivity when encountering such questions?
It seems to me that the questions above are still relevant even if it ends up being reopened.