I'm not saying this is why Bron is Bron, cuz obviously he would have been a beast no matter when he was born.
But have any of all read the book Outliers?
There's a chapter in there that detailed how being born during certain months increases your chances of being a sports star.
It covered Hockey. Some crazy ass stat like 80% of all NHL players are drafted were born in Oct, Nov, Dec ( I'm making up the months, I dont remember the exact months ).
This is because the way little league hockey is set up in Canada, kids born in these month are pretty much a full year older than most of the other kids they play against.
So they have the size, speed, strength and intelligence advantage off RIP. This leads to them getting selected to more all star teams and more travel league teams. Which, means they get better and more coaching while also playing better competition than what they usually face in rec league.
Now, you multiply that times 10 years of Hockey playing and you have a crazy advantage over others.
The book gives other examples of certain ppl being born during the right years, or areas and that playing a pivotal part in said person becoming who they were.
Very interesting read.