I'm as big an advanced stats guy as there is, but I'm telling you his awfulness is not reflected in his advanced stats.
He's consistently out of position, he's not nearly the rebounder he used to be, he fouls a lot, he turns the ball over a lot and he's just generally the antithesis of what you want young players to do on the court.
He's not a bad character guy, he seems like a good dude who goofs off. The thing is, that doesn't end when he steps on the court. It's just who he is 100% of the time and it will slowly drive you insane.
*it probably won't be a slow drive to insanity, it'll happen the first time he throws a ball over the backboard trying to lob himself an alley-oop on a breakaway.