Gold has been money for thousands of years and will very likely continue to be for many years into the future. As long as there are people that continue to hoard it as a store of wealth, it's money. Whether you choose to accept this fact is irrelevant. It still remains a fact. Bitcoin is also money because there are people that are willing to hoard it. Bitcoin or gold may not be your money of choice, but as long as it is the money of choice for anyone that produces goods or provides services then they are both money.
I should have said that foreign central banks "used to hold USD to back their currencies." Fiat currencies aren't backed by anything now because the issuers will not allow you to redeem them for anything. Printing new units of currency and buying government debt with it is not backing--it's debasing.
The functions of money have not ever and will not ever change. This "modern monetary theory" that you refer to is nothing more than an elaborate scam. I understand it well and I'm quite familiar with how it works. When you decide that you're ready to be deprogrammed, I recommend you start off with reading
The Creature from Jekyll Island. From looking at the reviews, it appears to have helped a lot of people in your shoes.
Money are instruments used to settle debts. Period.
Gold is not money anymore. It hasnt been money for a long time. Doesnt mean its worthless. There is still market value because its a traded commodity. Same as soybeans
MMT is just an economic theory that describes money in a modern economy. What Im telling you is not political. Its just how it works.
What does Jekyll Island have to do with anything? Reading that kind of stuff isn't how you learn about economics
Bernanke said gold is not money. He calls it an asset. Search it on YouTube. And here you are claiming central banks hoard gold because its money.
Nope, money is something that acts as a medium of exchange, store of value, or unit of account. When something is used to fulfill any of these functions, then it is money. Period.
If money is a commodity, then yes, gold is a commodity, because gold is money. It's not really important though, if money is considered a commodity or not.
Jekyll Island is where the modern fiat monetary scam was born. The book will explain to you how that scam works. Don't just take my word for it. Check out the reviews. It has helped a lot of folks see through all of the smoke and mirrors. (Hint: Keynesianism and MMT aren't economics. That stuff is to economics what astrology is to astronomy. Or do you believe in astrology too?)
Don't listen to what bankers say, look at what they do. Actions speak louder than words...and of course bankers are hoarding gold...because they know it's money and they know their fiat scam will eventually come to an end. When fiat ceases to be money, gold will continue to be money just as it has for millenia.