I've heard of it, but don't know how common it is. The picture of the foot doesn't bother me in the slightest.
I think the biggest problem with the newest range of phones is that they are too big, and don't fit comfortably in one hand. You would have thought that would be a consideration at least.
It can produce uncomfortable feelings. Probably an evolutionary thing as being filled with holes that aren't expected to be there signifies lots of damage. But it's hardly a phobic reaction.