The account under discussion is attributed public speech on the Internet. In other contexts, other conventions apply. There are about as many such contexts as there are kinds of relationships between humans. That's about as general as I can really make it.
If you're asking for a recommendation, it would be twofold. First, if a question seems like it might be taken as nosy, try to find a way to reframe it, or don't ask it at all. Second, when someone seems to persistently misunderstand something you're saying or asking in a more personal than professional context, consider that they may be intentionally deflecting a question or subject which they consider inappropriate to address in that setting.