I don't think it's an unreasonable expectation in the event of remonetization - and remonetization is the only real alternative to hyperinflation FOLLOWED by remonetization.
But, if and when gold is remonetized after the collapse of the Fed, to allow the Treasury to issue banknotes again, you can bet there will be a ferocious G-20 wide attempt to outlaw private buying and selling of gold. As in the USSR, it could easily become a capital offense.
Your gold and silver, IOW, may work in a Mogadishu situation - but if the government uses gold again, it will become VERY difficult to convert yours into New Dollars, or Ameros, or whatever they call it.
Which is why I continue to buy SLV and "junk silver", just old good-condition US coins from back when they were 90% silver; and so forth. I've always kinda liked the white metal better than gold, anyway.