All Nixon did was take the existing system where gold was already closed to Americans (thanks to FDR and others), and closed it to foreign central banks as well.
Fact is, there is STILL a financial system tie to gold, in that as gold *seems* to go up, it really is just an indicator that gold, steady all along, is showing the dollar go down. WHEN the system dies, we return to PMs as a matter of course.
Exter’s famous pyramid……anything other than Gold is Debt.
https://www.schiffgold.com/commentaries/exters-inverted-pyramid-of-risk