

GrapheneOS wasn’t going to be affected anyway and there’s nothing for the GrapheneOS developers to change. The developer verification thing will be done by proprietary Google apps. Those apps cannot get the necessary permissions to block app installs or disable apps.
Not exactly. GrapheneOS has an OEM partner and has early access to AOSP changes that aren’t public. A huge downside to that is that security preview releases can’t be open source until after Google makes the code public.