I would say that the utility of the answer is another consideration. In cases where one thinks that a good answer could be found to be helpful, useful, or instructive to readers coming to the site for on-topic learning in the future, then try to refrain from reflexively reaching for the insta-close button.
If for example the question is about astronauts shooting at the Sun, and several well-received answers with instructive insight on principles of astrodynamics and orbital mechanics appear quickly, then perhaps refraining from reflexive insta-closeing was the right course of action.
Alternatives, especially in low to moderate question-rate sites include helpful comments or possibly in some cases proactive edits, with discretion of course.