as far as I'm aware, Adroid is not the same as the requirement here, which requires specific Google attestation.

There is GrapheneOS, HarmonyOS by Huawei, LineageOS for older phones and many more Android ROMs.

Additionally, Linux phones exist and are already sold in the EU to consumers, not just a prototype.

There's really no justification around limiting the OS selection.

There is also Linux, Windows, MacOS and many more operatint system not limited to phones.