> App attestation does not require an Apple account nor a google account. For Android, it does limit the ROMs to Google certified ones and requires GMS to be installed.

To me, there is no difference between your sentences. You require the blessing of an American company to be able use eIDAS. Google has the power to disable eIDAS at a national scale by making the attestation services treat all devices as not certified.

There should be NO reliance whatsoever on a private company not under the control (direct or indirect) of the government let alone a foreign private company.

Edit: I just noticed your username and the fact that your account is very new. Are you astroturfing?