GrapheneOS doesn't give you root access, citing security issues it introduces. You could re-compile your own copy with root access, though not sure if we'll then be back to some non-certified OS that can't make payments...
>You could re-compile your own copy with root access, though not sure if we'll then be back to some non-certified OS that can't make payments...
GrapheneOS is already non-certified, for most apps that care, because it can't pass STRONG_INTEGRITY with play protect.
Yikes. Nevermind. The whole phone security model is one of the worst things to happen to computing, the concept that you shouldn't own your device for safety is so fucked.