Developer name for Raivo has been updated to Mobime on app stores, https://apps.apple.com/ca/app/raivo-authenticator/id1459042137

In iOS, the activation of 2FA is an automated process, eliminating the need for a separate 2FA code to confirm its enablement.

I agree with your observation regarding the unavailability of backup codes for download.

No complaints here, Seemless integration of both password & 2FA with iCloud keychain!