[colordrops]

It could be very difficult or impossible to access some accounts that use the email address for two factor authentication. And these are typically the most critical accounts.

[entropicdrifter]

I mean, that's really on the user for not setting up more than one 2FA method for their highly critical accounts

[colordrops]

That's for properly engineered services. There are many services that won't grant access without your email after auth has expired.