I think it is because BBD is a pretty selfish player. This doesnt mean hes bad or playing poorly. I will admit I really dont like BBD but will also admit he is having an incredibly solid year off the bench and is playing really well...
That being said, he is very selfish on offense. He hardly ever passes the ball when he gets it, especially when he is in the post. If he gets the ball down low, forget about anything running because he is just going to try to get to the hoop. On the jump shot however, he is usually pretty open when he takes it, and makes it at a high percent so Im ok with that.