I tend to think the separation between State and money is a good thing. I just don't see the Reserve Bank as being meaningfully "outside" the state, so I don't see "nationalising the Reserve Bank" as necessarily being a step in the wrong direction.
I agree that the State should not have a monopoly on money creation. But neither should any other party. And whatever SARB is, whether in-State or out-State, they have such a monopoly already.