True, but if you break down the value of gold then it's maybe a dollar an ounce from practical uses and 1500 dollars an ounce from the fact that it's a seven-thouand-year-old asset bubble.
Or, to put it another way, suppose tomorrow I figure out a way to replace gold with some much cheaper tin-copper alloy in all its industrial applications. That's not gonna decrease the value of gold all that much. (Note that I don't really count jewellery as an industrial application -- gold is used in jewellery because it's valuable, not because it looks any prettier than other metals).
Or, to put it another way, suppose tomorrow I figure out a way to replace gold with some much cheaper tin-copper alloy in all its industrial applications. That's not gonna decrease the value of gold all that much. (Note that I don't really count jewellery as an industrial application -- gold is used in jewellery because it's valuable, not because it looks any prettier than other metals).