This bugs me everytime I see it. I really don't understand why they take this position. I'm 100% certain that you're allowed to take a photo of a physical item you own (whether it's a car, a Mickey Mouse movie cell, a book or a Warhammer playing piece) in order to sell it on the secondary market. Have you ever seen GM tell people they can't use a picture of a GM car in a used car ad?
But it's also just plain obnoxious.