Landing squarely on the side of "talent", we have
Tsung Tsung.
Maybe he already put in his 10,000 hours. But I bet after 10k hours, what this kid can do vs. some average guy is noticeably different.
Probably what corey could do at the 10,000 hour mark is also quite different from the average 20 year league veteran who has perfectly ok eyesight and fundamentals.
I think that funky creativity corey shows in shots like
this one is a sign of natural talent. There are good players, maybe even pros who will go their whole life without even trying one of these funky spin trick shots. They may execute standard position routes to perfection but need ten tries to do that shot. He just gets up there and does it on the first try in a tournament.
Not sure if practice drills, excellent coaching, etc. can produce a brain that thinks of such a shot, or the great coordination needed to execute it.