Sadly it won’t work even if you own two broken phones and want to make one out of them. Big loss to repairability and indeed a massive waste of resources. Today I was reading on HN a story on how degrowth won’t do anything for combating global warming. Oh well, this is exactly the opposite of that and it’ll cause a lot of problems for future generations. They’ll look back towards us with disgust and dissapointment.

If you buy a phone, add it to your iCloud account, then the phone becomes broken in a way you want to salvage the camera/battery, presumably removing that phone from your iCloud account (which I don't believe requires the phone to turn on?) would allow you to use those genuine, not-stolen parts in another repair.