Apple repairs
"Basically it means Apple owns your device, not you, and could conceivably disable it remotely if they detect unauthorized repairs going on."
I think that's a bit paranoid. More likely it's a mechanism that ensures the machine has not been tampered with. I wouldn't be surprised if this could be enabled on machines sold to some business or government to allow them to verify the integrity of the hardware in their machines as part of an overall digital security effort.
Biting the hand that feeds IT
