Sorry, I didn't read the specification. Does it contain something which (in)directly makes Android/iOS a requirement? I mean if it's just an open protocol how to talk to each other wile doing attestation... Maybe that's already part of it?! Most important thing I can come up with, would be to mandate public access to the API which grants the token, or connects to the eID, so those government servers actually accept connections from our Linux or FreeBSD phones...
And better do it for both parties. Otherwise they're going to come up with some new age verification laws, the phones are fine, but we all have to shut down our internet servers and online forums unless we're some big company.