That's false. It's a digital key and it doesn't matter where it's stored. My key is on iCloud and it can be unlocked with my many recovery methods and contacts https://support.apple.com/en-us/102641

As for normies, passkeys or passwords it doesn't make a difference. Either you have people who use love1969 everywhere or those who constantly lose their passwords.

All passkeys accounts for normies require an email or phone number, which is what you can use to recover a password or passkey exactly the same way.