For sure. But here we are, at least with btc. Current fees, volatility, and confirmation times make it a pretty bad choice as a proper currency.
I certainly don’t think of any of it as a store-of-value ... more like a trip to the casino!
I for one know a few folks who have used bitcoin to transfer large sums of money across borders... pretty crazy times we live in. I expect bitcoin to dominate in this area in the short to medium term.