All your points are true, yet still depend on Google in sandboxed form. That negates everything else for me, who wants a reasonably secure device that works out of the box and also respects my privacy.
If a nation-state wants into my phone, it’s delusional to believe even graphene can hold them off, you need real opsec for that, and unfortunately all I’ve seen thus far from graphene guys is cosplaying that the NSA wants your porn selfies.
Graphene and micro g? Cool. Sandboxed Google? Nope.
Overly dramatic verbiage aside, I’m not seeing any discussion here, of utility anyway.
Good day.