Remove Ethernet or internet. They cannot force you to sign in if you literally can’t. Anybody who doesn’t want to and yes they recently removed it from the system so fuck windows and Microsoft for continuously being the shittiest and most popular OS but this is impossible to circumvent so it’s 100% foolproof for offline accounts. The only way is if they gave you a local database of every account but that would be stupid as shit.
Antarctica too? What about people who don’t have internet?