Arguing against 2FA is like arguing that they shouldn't bash your password because it means you can't see your password to help remember it.
You store a TOTP secret on your <device>....
It's less PII than an ssh public key because it's literally just a random string, that *they* generated, and you only need it for the web UI.
So please tell me how the Americans are going to track and identify you through a fucking TOTP secret.