Stiffness
I would hazard a guess that these baldies if not truly bald actually have very short hair around their ears or a very short hair cut overall. As a result the hair is stiff and able to penetrate any gap in order to get caught and pulled out. Of course this does not detract from the fact that the problem did not exist before and therefore it is a design fault by Apple and they should be lambasted for it. I believe Mr Jobs had a short haircut so this would not have happened if he was still about. Could be time for a new style rubber bumper that covers the gap.
Biting the hand that feeds IT
