They're banking on you upgrading your device before it dies, as opposed to e.g. accidentally dropping it onto pavement and cracking the screen.
Had that happen to me, I was saved by still having the backup codes + having some unholy Tasker + Pebble automations that let me operate the phone without display - enough to launch AirDroid, use it as remote display/input to enable ADB over WiFi, and then finally use scrscpy over ADB as a remote display/input that doesn't blank out on security screens and in Google Authenticator. Only at this point I was able to transfer all the other TOTP entries in Authenticator to the new device.
Lesson learned: 2FA with TOTP is a responsibility to be taken seriously, despite what security professionals would make you believe.
Had that happen to me, I was saved by still having the backup codes + having some unholy Tasker + Pebble automations that let me operate the phone without display - enough to launch AirDroid, use it as remote display/input to enable ADB over WiFi, and then finally use scrscpy over ADB as a remote display/input that doesn't blank out on security screens and in Google Authenticator. Only at this point I was able to transfer all the other TOTP entries in Authenticator to the new device.
Lesson learned: 2FA with TOTP is a responsibility to be taken seriously, despite what security professionals would make you believe.