PANICBUTTON I'm signed into a google account for play store but don't want other apps like youtube automatically using it. Microg has this toggle: https://ibb.co/ZptjtbSR Does Graphene's sandboxed google play have something similar?
Oggyo PANICBUTTON Does Graphene's sandboxed google play have something similar? No. GrapheneOS ships unmodified Google Play Services/Store. It modified just the way they are working (sandboxed apps).
NoahRaketic You will probably want to use profiles or the private space if you're concerned about this. There's no other way to restrict IPC.