Which was the exlamation mark by LeBron, what a dunk!
JR is a shooting guard, and an often not so cool-headed SG. He's going to shoot no matter how. Coaches can't do much about it, unless someone on the court puts him in his place.
That being said, his aggressiveness is his strength as well, his will of shooting won't be slowed down by missed shots. Sometimes that could be rewarding.