Your username, 𝙲𝚑𝚊𝚒𝚛𝚖𝚊𝚗 𝙼𝚎𝚘𝚠, is what I choose to call you - because it is what you have indicated to all of us that you want to be called. If I called you "buttface", and you objected, and I still continued to call you "buttface", how friendly would that be, on my end? Or perhaps that analogy is too strained, b/c it is a known derogatory term, so let's say instead that I choose to call you... "meowface" - would that be even the slightest bit better? Repeatedly, to your face as well as behind your back, over and over again, and btw this is because "I am such a nice man" as to have decided to call you "meowface" whereas the (somehow only?) other alternative was "buttface", so don't you see here what a favor I am doing for you?
I do not even have to believe that you are an actual "Chairman", it is just simple & basic respect. I choose to call you by the name that you chose for yourself, rather than the name that I made up for you.