My interests are irrelevant. I post my opinion. Readers may agree or disagree. I believe that is the intent of this site. It seems inconsistent with the intent of the site to ask questions/pressure or badger other posters about their interest, credentials or reason for posting. If posters were badgered about such things few people would be posting anything.
I trust that readers can interpret each post in light of other information that they have and that they subsequently read. I try to be accurate but I post my opinions. Each poster is free to do the same.
Since I have never looked at the interests of any other poster, I haven’t any idea what people tend to post about themselves. I’m not particularly interested. People who are interested in the interests of those who post will have to look at the profiles for other posters since I don’t provide that information.