No, it doesn't. Being a great shooter doesn't mean you are a great teacher. And when I say he needs a real coach, I mean a real head coach. Right now, 95% of the times he attacks 1 vs 1, from the dribble. He needs someone able to teach him how to move without the ball, how to use the screens, how to use backdoors and all this stuff. He would be much better if he learns to play off the ball. These are skills that requires a lot more work than improving a jump shot.
To do that, he needs a great coach/teacher. Is Smart the right person? I hope so, but I'm not sure. He has never had a teacher in his NBA career. He always had the freedom to do pretty much whatever he wanted on the offensive end. I'm not sure this is a good thing for him.