Sure, many people use centralized systems for this now even with crypto and thus miss out on that fundamental aim of these blockchain systems, but the idea itself is doable even in its current form and needed for many edge cases, and for basic financial privacy without often idiotic restrictions and snooping.
I know many people here will hate on that because they're firm believers in the twin gospels of KYC and AML, but so many of these laws are utter abominations in their intrusiveness that i'm glad to see at least something exists which can eventually be made to circumvent them more broadly.
Most of us are not terrorist money laundering cyber criminal drug dealers, and don't deserve to be treated as such with presumptions of guilt and zero privacy rights just because we'd like to spend and move money around without being pried into as if we were little children spending their piggy bank change.
Paper/metal cash used to widely, nearly universally allow for this without so much hand wringing, but sadly, it's slowly going the way of the dodo, and something needs to take its place that isn't loaded with moralizing, puritanical scumbaggery such as that found with credit card companies and banks, or the utter mondstrosity that would be CBDC if implemented as some regulators are planning.