Honestly, does it matter what kind of designer you are as long as you have a good visual aesthetic and understanding of usability and how people will see, interpret, feel, and use your product from end-to-end? Isn't "graphic designer" just a pigeon-hole limiting title that doesn't really mean squat when thinking about product design at a high-level?

Apple, in the past, has gotten things right because they thought about product correctly at every level. I don't see why we should think they will change this habit.