From looking at what is going on in all sports at the youth level, I'd say this is a matter of overprofessionalization. Kids do not play games as much any more, as much as they drill drill drill on skills skills skills. And not all of them, just the ones they are already good at. Game play suffers, and it's weird because I bet these kids are better dribblers and better shooters than their peers from the past. But not better passers, and they can't run set plays as crisply.
This is happening in all sports. In soccer, the Germans are dominating because they drill on those skills, as opposed to say the Brazilians who played soccer all day but had a different approach to skills building.
You also see it in the NBA. The players are simply much better shooters than I can ever remember from 2 or 3 decades ago.