Which was true in times past but it is not currently which is why tariffs are needed to offset the difference with places like Europe where the Euro is stronger than the US dollar.
https://www.xs.com/en/blog/strongest-currencies-in-the-world/ As some has mentioned the US dollar is fiat money and so it is as valuable as people perceive it to be. The reason why the elite try their best to hide it's true value is in the day everyone slides their debit card at the grocery store and we walk out with a bag of groceries for a thousand dollars even the billionaires will be just as broke as us.
All our current money bro is fiat. Fiat just means by decree. Government controlling the purse and the sword can by decree and force can make anything they want money. So all nations on this planet at least as far as I know uses fiat money.
Our fiat money and has been long before we became the reserve currency is IOU's. That is what our paper money is in times of gold and sliver it gave birth to paper money. Government decreasing the amount of precious metals in coins, folks filing of the edges of coins for the metal content, and etc. We went to IOU's paper money. You could present the IOU and in turn receive the face value in the denominated metal.
In time it was just easier to use the IOU's as the money or currency. As they were easier to carry around, they never needed the security that gold or silver did when carried. It was just a easier system to use the IOU's.
A lot of times when monetary systems are talked about they are seen as cabal of conspirators. That is just not the case. In fact you can read studies most of people that believe conspiracy theories are not of low intellect. The struggle is the random the unequal of something.
Take JFK for example. He is the most powerful man on the planet. He is consequential, he has influence, he is important, he has high value on any kind of index that would assign value. He is killed by no one, someone of no consequence. There is a discrepancy here and the mind must find a way to find parity, equalness, balance, or otherwise it makes no sense.
Same thing for our monetary system that proceeds us. It's flaws are not the conspiracy of some evil. It is the road to hell is paid with good intentions. God in Proverbs warns of what can befall man. He warns of evil and he warns of foolishness. Most of his warnings are beware foolishness. Foolishness causes more damage in the extent or over a wider area not on a moral scale but sheer numbers.
Such is our monetary system. The debt can never be paid it is impossible. A mathematical impossibility. The best we can do is get rid of the deficit so that debt goes up at a slower rate.
What makes the debt impossible to pay off is every dollar created it created by debt. So if you borrow $100 hundred dollars. That is what is created $100. However, when you create that $100 you owe $104 back but only $100 has been created. So other debt has to create the $4 to fully pay off the debt.
It is a intentional system as the other system was worse. When we used hard currency or metals for our money we had stability. However, the problem was lack of liquidity. Like a bank run the money always ran out before the line did. After the 1837 depression which came after Jackson had ended our fist central bank.
Many in our country began to plan once again for a central bank. What it allows is a creation of money that can expand and also contract. It allows for elasticity. So in theory you have more liquidity when you need it and a contraction when not as much is needed. This is done by injecting the economy when needed. Someone needs more money so they get a loan. So the money is created then after it fills the need for the liquidity it is removed. When a loan is paid off that money is destroyed.
The system does make sense but it has a built in flaw as for example every $100 created you owe back $104 and that can only be created on a future loan. So it makes the debt ever increasing and impossible to pay off. We are not alone though this is the same system worldwide.
We owe $38 trillion but the rest of the world owes something like $110 trillion.