I haven't heard too many people here say that he doesn't have some talent, although I'm clearly in the small group who doesn't think that he was nearly as much talent as the majority do.
As for those stats, that's all good and well(although 40% FG ain't something to brag about) but the fact of the matter is that the large majority of the time he's been on the court, his play has left a lot to be desired. Anyone who has watched basketball to any degree, can see that.
Furthermore, the kid has not refined or improved his game one iota from when he first played till now. Doesn't mean he won't at some point, it just hasn't happened yet.
Kid still has time, although not much this season, but he needs to have an epiphany. We'll see if it happens.