Once WMB learned to turn his hips he has become a monster with anything middle in hitting for extra bases and HR's all over the place. He did not come up to the majors even knowing how to turn on the ball. So I would have agreed had he continued as he was when he came up.
But now he has shown the ability to absolutely crush balls middle in. Look the greatest hitter that ever lived worked with a smaller strike zone...and the greatest mistake pitch hitters that ever lived worked with a smaller strike zone. Like I said, if he stayed exactly as he was when he came up, I would have agreed.