Well its still early days, Biden was very against Crypto, so point of sales systems couldnt provide it. Companies like Square are now working on it, so you will be able to use it; or any form of cash you want, or fractional shares and gold etf.
Maybe all currencies will just be forced to compete on inflation one day, and everyone will use the one with the lowest annual growth in new supply.
I still think DOGE is just feeding all that information to Palantir, and everything else is a pretext to that goal. They want an AI embedded directly into the government, making a large dependency on it, and bypassing checks and balances quickly has allowed that to happen.