The problem with that is that if the user loses their key, their account is no longer recoverable. As things are with ADP, enabling it comes with a bunch of warnings about that, and IIRC it also forces you to print out the recovery key for safe storage.
The problem with that is that if the user loses their key, their account is no longer recoverable. As things are with ADP, enabling it comes with a bunch of warnings about that, and IIRC it also forces you to print out the recovery key for safe storage.
That would alienate users due to key management complexity. Apple is about having a smooth user experience.
Apple processes multiple orders of magnitude more account recoveries for customers each day than receive government requests.