Apple patent reveals reasoning for Apple's removal of screen protectors from shelves?

In a post cleverly titled Apple Patent May Shed Light on Recent Protective Film Ban, Patently Apple makes a case for Apple’s removing screen protectors from its shelves.  The patent in question shows use of retardation films on current and future Apple products to combat the distortions and negative effects caused by users in sunlight or with polarized sunglasses on.  

The positive gains in visibility of these films could be muted with the addition of screen ‘protectors’.