Until you get locked out of your email account and can no longer access anything. This happens all the time with freemail (Gmail, Hotmail, Yahoo, etc) accounts.

The contents of mails also shouldn't be considered secure. I like the idea of doing proper SSO through an email provider though - for example, using OIDC (OpenID Connect).

Good security with easy recovery! Amazing!

My father does that by adding pepper in his password manager. And having a shitty one word master password. The whole thing is both needlessly convoluted and poorly secured. It's fucking atrocious.