You're making a straw-man argument with "anything exposing gender metadata". It's not like I dug up some obscure article - it's literally his chosen brand name. There's nothing arbitrary to use "he" for somebody who calls himself "mr".

Is it possible that you have a good point about inclusive writing in general, but you just happened to hop on the wrong case to make your stand, didn't realize that we're talking about an explicit "mr"?