He needs to fit into the right system to be most effective. If you play him at the 3 on the wing, he isn't going to get a lot of points and will get abused on defense.
Play him as an undersized 4 and you have something in the right matchup. Within 15 feet, the guy just scores and in bunches.
He will NOT get abused on D. Kid is a gamer. He is way more athletic than people think. Don't confuse being exceptionally fluid with not being athletic enough to play D. That kid is major talented.