You can use them to save and spend for a few months or up to a year, but you shouldn't expect them to maintain their value over any period longer than that, and you could wake up one morning to it all being worthless.
Discussion
I think checking accounts and CBDCs are worse, though, and can only be used as a throughput account. I would treat everything in there like a hot-potato and try to spend it or move it someplace safer before EoM.
