How has it not been a store of value?
Bitcoin is a speculative asset: it has very high price volatility. It is not a store of value in the proper term.
Bitcoin lost 10.8%
Gold gained 60.0%
You just proved his point. In this example, bitcoin's volatility is closer to zero than gold's. Thus, by the quoted definition of "store of value", then in this particular time frame (it would be very different going back 5, 10, 15 years), bitcoin is the better store of value.
There's a reason people still use USD, EUR etc. and not fractional ETFs to pay and get paid.
There is a reason people still have things like checking and savings accounts and CDs.
That’s exactly my point.