People are going to hate reading this, but I like the fact that Apple pairs parts. I don't want anyone to be able to steal my phone and then either use it or strip it for parts. I want there to be zero incentive to mug someone on the subway for their iPhone. I want that lost iPhone to be turned in to the lost-and-found instead of just being stolen.
This law could potentially revert us back to how things were 10 years ago. When owning a high-end device was a pain in the ass simply due to the troubles it invited.
This law should have is provisions that allow for pairing of parts but require the ability to support generic parts without serial numbers. So if a phone is stolen then the components will be blocked from use in other devices. But if you require a replacement part you can install a third party part and everything will work as expected even without the blessing of Apple.
There is no reason to discard the advantages to paired parts when casting new legislation. The best of both worlds is still possible.