Although I more or less agree with you, I think the intuition is that some "common sense" method of identification should work. E.g., you should be able to identify yourself with government-issued ID somewhere or something. I think the frustration is that at some level, e.g., the 2FA device is being privileged over something like a notarized government verification of identity by a living human. So although I agree that you shouldn't be able to just e.g., call on the phone and ask nicely, it seems like for important accounts there should be some protocol for doing it involving some real-world chain.
When everyone has 2FA, 2FA backup keys become kind of impractical in the same way it becomes impractical to remember all your passwords.