It looks like Apple ID "RK-"-prefixed recovery keys are no longer a thing. I have one stored in my backup, but none of the "forgot password" scenarios asks for a recovery key anymore. As a further test, I just stripped two-factor authentication from my account, and set it up from scratch. No mention of a recovery key this time around, and no section for it in the security tab[1].
Recovery keys are gone. You must either have a 2nd device, or be able to receive a text or phone call to a verified phone number. Failing these, the last resort is now an "account recovery" process that takes a few days to reset via what looks like verification by email and confirmation of personal details.
I'd rather have retained the recovery key option, but I imagine this system was removed because the majority of consumers weren't actually storing the key. Of people who at least stored the key, far too many probably only put it on their Apple device(s), which is of course useless.
Recovery keys are gone. You must either have a 2nd device, or be able to receive a text or phone call to a verified phone number. Failing these, the last resort is now an "account recovery" process that takes a few days to reset via what looks like verification by email and confirmation of personal details.
I'd rather have retained the recovery key option, but I imagine this system was removed because the majority of consumers weren't actually storing the key. Of people who at least stored the key, far too many probably only put it on their Apple device(s), which is of course useless.
[1] https://imgur.com/a/pPJe9