11 losses support for 7th gen or earlier and non-TPM enabled equipment.

You might still be able to find something newer that lacks TPM.

Alternatively, we don’t really know why they chose 7th gen as the cutoff for sure. It is quite possible that they’re just going by Intel’s own support structure. Until dropped support for 7th gen due to an age out scenario so it’s absolutely possible that in another couple of years still drop support for 8th gen.