The name of the issue reveals the actual problem: "should never be exported in clear text". If the export was encrypted with a passphrase in a standard format, then there would be no issue. It's specifically doing it in plain text that causes consternation. Of course, in practice it doesn't make much of a difference when users are incapable of choosing secure passwords, let alone passphrases. But requiring exports to be encrypted is the least one can do to maintain a degree of security while still allowing exports.
> For many years already, people lose access to their Google account every day and can never regain it. Google is well known for terminating accounts without stating any reasons. With that comes the loss of access to your data. In this case, you also lose your credentials for third-party websites.
In practice this is frequently already true. Many sites require an email to sign up. Whenever you attempt to log in on a new device, they require you to type in a code sent to your email. Without access to your email, you cannot sign in.