Sorry, I just don't find it necessary to dump all information on a subject when someone asks a related question. Some might consider that a virtue? You know concise and to the point without judging. I also find it annoying when people automatically tell you to call a professional. This is a DIY board and part of being a DIY'r is to know your capabilities. That is to know what you should and shouldn't do.
Your joist information is great and to the point. Your other information is great too and would be great as an answer to an electrical question or an electrical FAQ. I question whether somebody looking for cable sizing information will necessarily read this thread. Maybe they will if they read every thread.
But keep up the good work. Just a difference in opinion. And personalities?