I do kind of laugh when they say that Roy develops big men. Does he get the 5-star big men drafted, yes. Could 99.9% of college coaches get their 5-star big men drafted, yes.
But, if you take a nice look at the former tar heels big men in the NBA, they are not high producers, all-stars, good shooters, etc. That may or may not be Roy's fault, it's just an interesting trend when fans say Roy develops big men, but yet, cannot make them productive pros.
If I'm Bacot, I leave and develop with NBA/G-League coaching.
That said, I do understand the argument of staying in college, it's not all about leaving quickly, but I wouldn't say that Roy is a great developer of talent for when they turn pro.