> what that means
I'm also not sure about the meaning, but somehow I suspect that you are now, because of what you just wrote, an example of it. You are in this case such a reply guy š
I think it's at least partly about replying in a way that is not kind to the person you reply to, for example if a question was asked then instead of trying to answer that question, you post a besserwisser-style reply where you explain why the question is meaningless, or something like that.