Nope rev, you are way off here.
Almost every great player in the nba started off thier careers by playing behind crappy vets (raja bell types) and racking up dnp's while never getting consistent minutes and constantly changing roles/postions.
Kobe, wade, lillard, love, durant, harden, rose, westbrook, aldridge, wes matthews, cp3....... all these guys got a bunch of dnp's in thier first few years playing behind washed up crappy vets.
Corbin is just following the blueprint layed out for him
1. draft a talented young player in the lottery.
2. Play a horrible old player in front of him
3. Constantly change his minutes around and give out lots of dnp's
4. never give him an actual role or postition within the team
5. when he plays great in summer league and preseason and works hard on his game and busts his but at p3 and other off season camps....... repeat steps 1-4.
6. Play him at a position he has never played before, pg. In that way, he looks worse than he is, justifying your not using him much.