And here is the real issue. Why should he listen to you if you extend no respect to him? This isn't a conversation, it would be a talking down or a lecture. Respect is a two way street and you will never get it if you don't give it.
I've been coached by Airspeed, the FlyBoyz, and Alchemy. I've also gone out and had a few drinks with all of them and talked skydiving, et all with them. All of them have medals, years of experience, jumps, and buried more friends than you have. I've yet to see them ever offer such contempt or disrespect towards anyone in this sport that challenged them on their opinions. There is a reason why they are seeked out and requested to help others - because they know how to.
You may have the knowledge but because of how you deliver it, no one really listens anymore. There is an old cliche "What you are speaks so loudly I cannot hear a word you are saying."