>The impact is a direct threat to independent AOSP distributions like Murena's e/OS/ (which I'm personally using). If installing a basic APK eventually requires a Google-verified developer ID, maintaining a truly de-Googled mobile OS becomes nearly impossible.

I have trouble understanding why this is a threat to AOSP distribution. I would have said quite the opposite actually, I don't see why they would not remove the verification and that's an incentive for people to use their project instead of Google Android.