Comment by grapheneos

Your claims about this don't make sense. Google does not provide compatibility with GrapheneOS for Google Play services. They do not provide support for using it or fix the issues introduced in new releases.

GrapheneOS doesn't license Google Mobile Services (GMS), doesn't include it in the OS and doesn't have Google certification. It isn't permitted by the Google Play Integrity API device and strong integrity levels because it doesn't have a GMS license. Google doesn't offer any way for GrapheneOS to license it.

We're legally allowed to provide compatibility with Google Play via our sandboxed Google Play compatibility layer. Similar to APK mirror sites, we're also allowed to mirror the freely available APKs.

We've put enormous time into developing sandboxed Google Play compatibility layer and there's ongoing work to continue resolving edge cases we haven't covered. If Google wanted Google Play to be used outside of stock operating systems licensing it, they could make it work as a set of regular sandboxed apps without us needing a compatibility layer. Our baseline compatibility layer isn't doing anything they couldn't do themselves by making them apps handle being portable to operating systems not deeply integrating it into the OS with highly privileged access.