I doubt that will ever matter. There are niche alternatives to lots of American tech. But that isn't what the "digital sovereignty" push is about. It's about not building fundamental services on American Big Tech in the first place.
But it's obvious that nobody really cares about it after all. For instance, Germany's own official EUDI wallet for Android explicitly requires Google Play Integrity
https://bmi.usercontent.opencode.de/eudi-wallet/wallet-devel...
Okay scratch my doubtfulness from the other comment, of course you're right what was I even thinking. Man I really hate that.
You are linking to version 0.14.0 of the documentation. The latest version is 0.19.0. The release notes of 0.15.0 mention that they dropped the Play Integrity dependency