Well, this means there is no discussion possible about art.
This is a kind of relativism. Other kind of relativism include moral relativism ("What is good or bad changes with person to person"), and cognitive relativism ("Truth changes with person to person").
Sorry to tell you this, but relativism is sometime dangerous (eg. one could say that, for some people, it is considered "good" to rape old ladies), and often just wrong (you'd have hard time to find someone who would honestly declare that Bach's music or Chinese landscape paintings is really not art).
Apple's products have many impressing qualities, they are beautifully designed, engage their owners a lot, etc. Art do not need to come into the picture.