AIUI, all it would take is an act of Congress to effect change on how the Federal Reserve does business — whereas changing the function of the Supreme Court is somewhat more constrained by the constitution. I believe "governed" is still appropriate, even though the Federal Reserve can act independently, it is only able to do so because Congress permits it.

> US Supreme Court is appointed by Congress/President.

And have life-long appointments.

> You wouldn't say that is it "literally governed".

Your conflating two ideas. I would actually say that the Supreme Court is a government entity. You said:

> independent of the government

It literally depends on the US government in order to function. Calling it independent by any stretch of the definition is disingenuous.

> And the central bank model applies in most countries not just the US.

You missed the point. Libra is offering a coin on a global scale. To compare this to one central bank is like comparing apples to oranges.

Honestly, I really don't understand your overall point. You genuinely think the Fed just sits on some island while it regulates US economic policy without any influence or dependence on anything but itself? Think about that for a second.