That’s not a good reason to do this. If you really wanted to do it that much you could just modify the real parts and that isn’t really a thing that happens anyway. What’s a far bigger concern is giving one company complete control over whether you can repair your own phone or not, creating a monopoly where they can charge whatever they want, and they might not even do it at all because they’d prefer you to buy a new one. This is actually happening to the average person, these theoretical attacks that serialisation doesn’t really protect against aren’t