So if someone steals a box of iphones, adds a few grams of explosives inside each phone, and then resells them or gives them away, then Apple is at fault?
If you buy them from the back of a truck, then no, Apple has no fault of course.
But there's a declaration saying "we had nothing to do with the pagers even though they have our brand". That's different from saying "they were booby-trapped after they left our hands". Not even the company itself is claiming the defense you're using.