Call me naive, but I think "tanking" is mostly irrelevant in the NBA. Teams that lose a lot only look like they are doing it on purpose.
What is relevant, is that there are a lot of talented teen agers, that get drafted into the NBA. Some of them have attended prep schools or academies with really good coaches. Some have come from average high schools, or even podunk little places where the main coaching advice was "give our best player the ball and try to help him rebound and play defense." Players can get coddled and some do not get much in the way of coaching.
The next problem is all of the players that get only one year of college play. They see the dollar signs and are one and done. This last year college schedules have been disrupted. Some of these players are 5 or 10 games from high school and are playing against LeBron James.
Our announcers made the point last game against the Worriers, that there was a new guy that had already played more games this year in the NBA than he played in his whole college career. Bagley got to play at Duke, but for how long? He makes fundamental mistakes every game. The question is can he figure out how to stop making those mistakes with quality coaching?