He's an Anarchist, and Anarchists can't defend anything they say. He doesn't know WHY people use Gold as money or why it wins out amongst productive people as a portable exchange of value.
Imagine if we used a million different commodities to back up a million different forms of receipt money in a free market contest were the best money wins. I'd love to hear him make the case for why something could beat gold.
Is it perfect? No. It's just more reliable than anything he'll suggest and wins for a reason.
My money says you're right, he'll want some form of fiat garbage. Perhaps seawater? Grains of sand? Bits of information? Dog turds? With an Anarchist, anything is possible.
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