Gold is fiat now
Gold coins issued by a state are IOUs of that state. Historically, gold coins exchanged at a separate value (2–3x in the case of Rome) than buillion. Why might that be?
By printing money MMT can create wealth out of thin air
Are you trying to say that dollars are not financial assets? Are you trying to say that bonds are not financial assets? Are reserves not assets of banks? Have you read anything? Do you understand the difference between real assets and financial assets?
You have no arguments other than vague appeals to “experts”. You aren’t even capable of articulating our own point of view.