I think all of those skills can be taught/learned, but the execution of those skills cannot be learned. It's just like you in school, no matter primary, or graduate school. The teacher shows new concept to every student, everyone undertsand that concept, but only the good ones can use it to solve the problem. The same is true with the bball players, if they are good, they will learn and be able to use it; otherwise, you can practice all you want, but still end up be the same player in the game situation.
I prefer the high arc, I think it increases shooting percentage. He does elevate higher than the average player, which perhaps makes his shot appear flatter than it is, but the majority of his shots remind me of James Worthy, rockets into the hole. When he is "on" he is a great shooter, no doubt.