I'm not a Corbin supporter. And if you go by the negs I've received from a couple of his supporters, then I'd be considered one of his harshest and most vocal critics. However, your statement is simply revisionist history. DMC could NOT shoot 3's when he was in Utah. He was at less than 29%. And TBH, he wasn't an "amazing" defender. He was a high-energy guy who often took chances on defense. DMC averaged 17 mins/per and averaged 6 points. That was up from the previous season when he averaged 14.5 minutes. That's about what you would expect from a bench player. It wasn't until DMC started working with Quin that his shooting improved enough for him to become a starter.
As for Millsap, yes, I concede Paul shooting 3's may have been a good concept. But you have to remember Ty graduated from the Sloan school of basketball where the 3Pt'er is a gimmick. Besides, you need a big willing pass the ball out when he's doubled. The ball ONLY left Big Al's hands if he wanted to throw it back to the PG, reset his position and get a re-entry pass.