Have you actually tried it? Because I did some months ago to setup an AppleTV and it just does not work. It just hangs at the last step without telling you anything. If you inspect the server response it just says "Your account cannot be created at this time.".
What ultimately helped after weeks of trying and tinkering was installing VMware Workstation, patching it to enable macOS support, create a VM with the specific hardware configuration of an older MacBook, install an old version of macOS and do the 2FA from in there.
What ultimately helped after weeks of trying and tinkering was installing VMware Workstation, patching it to enable macOS support, create a VM with the specific hardware configuration of an older MacBook, install an old version of macOS and do the 2FA from in there.