This is totally reasonable, but note that there exist in general issues that are valid even if they’re not reported or even consciously perceived by many users. This does not mean that these issues are necessarily important, but if you exclude issues like this in the first place, you will very likely miss certain types of issues (especially UX) and issues that seemingly “only” affect minorities (there are minority rights for a reason).
Once an issue is decided to be valid (or “could-be-valid”), we can talk about solutions and their pros and cons. And that would be the perfect moment to weigh in and juxtapose the advantages of the improvement and the disadvantages of the change as such.
Note last but not least that I’m not saying “this is a issue, [please] fix it”, but rather I’m pointing out issues, explaining them and proposing solutions, which – I think – is a cooperative way of reporting issues.
If you really do, great! I suppose you’re talking about changes to the interface, but just to be clear: Would this mean that PRs for “not so important” improvements in the interface could be rejected if the effort of gathering this feedback outweighs the general interest? I could imagine this and wouldn’t even contest its validity, but then I probably wouldn’t make the effort for PRs like this in the future. (And just to be clear: I’m trying to understand your response and have no intention what-so-ever to escalate anything here.)
PS: The description of the “Read guidelines” badge ends with “Be nice!” You just closed a topic in which I had replied without leaving a comment about why you close it. Just to let you know: That did not feel nice.