Pounding the ball into Tim isnt the same as telling your team to not cut. The offense is geared around the big man, as it should, but it doesnt mean hes the only person who should be doing anything in the offense. That offense is ran thru him but he is not the only part. He commands so much attention that he will get other people easier baskets/looks.
No coach, especially not one with 2 rings, would tell his team to not make cuts to the rim when their big man is operating in the post.