Encryption means speedy deletion so there is still value encrypting even if the key isn't protected. But that's probably not the reason for Apple always encrypt

Encryption means speedy deletion so there is still value encrypting even if the key isn't protected. But that's probably not the reason for Apple always encrypting things with the key of the Secure Enclave. I think the reason for this design is to make the full system easier to reason about, which seems like best practice.