He is obsessed with the US losing reserve currency status. His stated belief, I believe, is that the IMF will use a basket of currencies for the reserve..... and that SDR's will be used for something entirely different than what they are used for now.
But it's all based on the flow of gold from West To East, and the ascendancy of China.
He could be right, but he (and many others) have been completely wrong, over and over, for 20 years now. Hoarding gold to the exclusion of other assets is not a strategy I recommend for the ordinary investor. Good luck with that.
My guess, we see a bankster backed digital currency based on something similar to XRP (third generation crypto of the non-mined variety) , within the next five years.
We see cash mostly voluntarily abandoned (as technology takes over in payments)over the next decade or so. With cash out of the equation, negative rates become much more easily maintained.
We see negative rates for as long as extend and pretend can possibly be maintained . That might some years.