They’re saying TPM 2.0 is required. If so, many Windows systems from before 2017 won’t be supported, and even some Windows systems since then may have it disabled in the BIOS/UEFI settings, and many brand new built-from-parts systems may lack a needed chip. See https://mspoweruser.com/turns-out-windows-11-does-not-need-t... for some review of the situation (which seems to be “official docs say 2.0 is recommended but actually only 1.2 is required, but the app is currently enforcing 2.0”).