I dont think you know much about rock climbimg culture or music that is out there.
What you say is kinda true for classical music, where exactly you need to go through formal schools from early. But that is literally the parents driven start.
Even if you’re right, Burning Man strikes me a symptom of a sick and hollow “normal” society.
At some point 10+ years of adult development will get you pretty good at something, but being competitive beyond say a high-school varsity level with a late start is very difficult.
And then you are part of that community just like any other guy.
He was not talking about joinikg NHL.