I have a conspiracy theory that most users who are an expert don’t post much about that.

For example I am an expert on two things most people find obscure; and for all my comments I just avoid talking about them. It’s too hard to wrap up an idea without lots of background information, there are no short posts or comments I can make about it.

Almost all the highly upvoted stuff are short. Were I to try to make an expert post it would be totally ignored. So why bother for me when I can snarky about things I know nothing about ? More fun !

I think experts who write short terse pithy comments that hit the mark, at a timely fashion, are rarer than hens teeth