I believe implicit requests for advice basically shouldn't exist ... there are good reasons to have social norms that drive people away from this sort of behaviour
Why do you believe this? That is, is this an aesthetic preference about the kind of society you want to live in, or do you believe they have negative consequences, or do you adhere to some deontological model with which they are inconsistent, or... ?
I believe there are negative consequences, some of which I've already elaborated upon, and some of which I haven't.
Illustratively, there do exist social norms against patronising other people, asking personal questions, publicly speculating about other people's personal circumstances, infringing privacy, etc., which are significant risks when offering people unsolicited advice. Since offering people unsolicited advice is itself a risk when inferring requests for advice from ambiguous statements, it seems reasonable (to me) to expect people to be less incli...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.