I'm getting confused as to what the point is - he's not a top player, he shot a pedestrian 75 with little instruction and not much tournament experience, only started playing at 11, skipped "Daddy Golf" - but somehow he sounds like the exception rather than the rule.
I guess I just have a hard time believing that *MOST* top players in individual skill sports weren't top players at lower levels or younger age groups. It seems like in every endeavor in life there is a narrowing process, like a pyramid, as juniors age and the skill level increases, and to get to the higher levels you needed to have had success before. Is golf that different?
All Sports are different unless you are "That Kid". "That Kid" (Tiger Woods, Phil) are the exception, not the rule. Most guys on tour weren't "That Kid" when they were young. At 8, it doesn't matter and is not a great determiner of future success. Spieth didn't even begin playing legit until he was 13.
That kid that shot a 75 with little tournament experience has as much upside as any kid that has been playing since 5. I would think maybe more because he has less expectations and no baggage.
The point I am making, there is no rhyme or reason a kid will make it. "Hard Work beats talent when talent doesn't work hard." There are too many factors against determining success.