We had this same “gold as a store of value/measure of value” argument on another thread. Scaredycat opined that gold has performed well for 1,500 years, but unfortunately history doesn’t bear that out.
I won’t agree the superiority of fiat money over gold (or other precious metals) because that’s a non-starter as well. However, the argument that gold is historically a strong performer is completely unsupported by facts.