One con, too, is that Graphene drops support when Google does, limiting the options around buying quite older models and running them for a long time to keep price low.

I still appreciate GrapheneOS and understand why they drop support, but it is definitely a con compared to other ROMs which trend towards extending support longer.

Too, you can shove Google into its own separate User from everything else and keep it locked down in an always on VPN or the like. You don’t owe it the primary user on your phone. You can even keep that user shutdown such that none of it runs until you explicitly switch over and run it.

GrapheneOS is pretty dang impressive.