Most people don't use passphrases at all (I think OP one of them). And if a user used passphrase for example "456rty789uio", he can use "456rty789uio2020" instead.
BTW, I don't agree that everyone should use a passphrase. Yes, it improves security and plausible deniability, but 12 words provide the necessary level of security, so that passphrase is optional.