I maintain a fairly small time open source package, and generally the users aren't super savvy in terms of coding, I understand that. It's an R package, and most of my questions I receive are really basic R questions, not about my software. C'est la vie.
But while I understand that doesn't mean I have time to deal with it much anymore. Responses tend to come in large batches once every couple of months just because that's when I'll finally get a chance to devote a decent block of time to the thing. OTOH if I get a non-horrible PR I handle it relatively quickly. To your point, a well thought out issue is appreciated by me, but it's just not going to get handle anywhere near as fast as a PR - that's not a judgement on the submitter, just a reality of free time
I understand the sentiment, but please keep in mind that the set of people who use a piece of software and are able to file a useful issue does not always (or probably never does) overlap completely with the set of people who are able to contribute code to a project.
Well thought out issues can be valuable to an OSS project, and should IMO be thought of as a form of contributing. Same with documention.