Because coaching at the NBA level is moreso about managing egos, roles and relationships with players than college is- which is mostly X’s and O’s, player development, recruiting, etc. I don’t think he was particular good at those 3 things at the college level… on top of some personal things that probably distracted him from the job. I think he was actually pretty good at player relationships before he had his own personal issues that he’s now probably grown from. And I’m not saying Xs and Os don’t matter in the NBA, they just matter a lot less. It’s about having the best talent in the NBA.
I disagree with almost all of this except for the point that college coaches need to recruit. On some teams player development isn’t as necessary in the nba but the pistons aren’t one of them
But X’s and O’s in the nba is another level from college if you aren’t great at it at the college level you have no shot in the nba. The player relationship part in the nba works out when the players, and especially the stars, have confidence that you are preparing them well and going to out coach the other coach