You don't like not having to worry that they don't store your creds so they can't lose it?
The creds they store hold no value. These creds only give access to their system anyway. They store the email address either way so the situation is no better but less convenient.
The creds they store hold no value. These creds only give access to their system anyway. They store the email address either way so the situation is no better but less convenient.