The idea of there being some "government approved" list of things people can buy with this is horrifying and exactly why cash should continue to exist.
And there's a solution to that that lets them value what they want appropriately and not have to choose it from a government list. I think unfortunately the temptation is too high for governments to also try and tell people what their priorities should be, which is why having an exchange medium that doesn't involve government control is important.
I don't think it's going to be a list of things, but rather a list of vendor types (grocery stores, pharmacies, gas stations) that have to accept offline payments, and that banks must accept offline payments from. You can live without a new iPhone if the terminal is down, but you can't live without food.
