> you would have to make it non-interoperable with existing money.

Why? Just eliminate surveillance.. no tracking is no money. There's another theory that maybe no money is no content, but that's sort of what tfa (and other stuff on HN lately) is actually talking about. Lots of people who would make content or just conversation for free are still relying on some sense of community which is under attack everywhere if not already destroyed. Community means organic discovery, organic participation, and some reasonable expectation of continuity / non-enshittification that's actually independent of corporate interests or sponsorship.