So it's not what I described. In my example, even Monero could be accepted, because the stores would deliver the name and total of the payment to the government.
nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qgkwaehxw309aex2mrp0yhx6mmnw3ezuur4vghszymhwden5te0wfjkccte9ehx2cewv9c8qqghwaehxw309aex2mrp0yhxummnw3ezucnpdejz7qghwaehxw309aex2mrp0yh8qunfd4skctnwv46z7qpqvxd0dfst8ljvwva2egrpc53ve8ru78v8aaxfpravchkexmfmmu3sqqdk88 you just described about how the new "Travel Rule" works in the EU. Starting from December 30, these regulations are already applied in the EU. Monero, USDt are now simply illegal because they do not comply with the legislation.
Discussion
For that to happen, Monero would need to be tolerated/accepted, otherwise, it would merely be an act of self-incrimination.