The whole article is baseless.
In 1960 I bought gas for 19.9 cents a gallon.
Today for the same two dimes (if I use silver dimes) I can actually buy more than a gallon of gas. The price of gas is down. At $4.00 a gallon it is cheaper today than in 1960. Two silver dimes today cost over $2.20 each, that would be $4.40, in some states that would leave a dollar left over in change for that one gallon of gas.
What has changed is only the value of the American Dollar. Pure and simple, government counterfeiting has raised the prices of all commodities.
Fiat money is the downfall of all societies.