Signed address Wallets and seed phrase could be lost or misplaced after a long period of time but email account on a secured device stays almost forever.
Bitcoin private keys stay with you and you can use them for signing Bitcoin messages anytime.
Emails don't stay with you forever and companies provide email service to you can shut down their services, platforms anytime. You don't control your emails forever and it's not a safe account recovery method.
In Bitcoin forum, your Bitcoin private keys, and Bitcoin signed messages are most important things for account recovery.