I don't think you can support this claim. Today, 96% of iPhone users opt out of tracking [1]. However previously I remember a similar number of users not turning off tracking when it was an opt out option in Settings (can't find the sources). This inconsistency between opt-in and opt-out behavior means one thing: users generally don't care and neither do they understand what privacy means. Because otherwise the difference between the two approaches would have been smaller.
[1] https://appleinsider.com/articles/21/05/07/only-4-of-ios-use...
> An open standard of electronic cash could solve these issues perfectly
The reason this is not happening is, or not so fast anyway, is I think (1) people tend to trust government-backed currencies and (2) converting such currency to any other form is a friction point. I get my hard earn money in govt.-backend currency on my card from a bank that is tightly regulated and has govt. protection and guarantees. Then I pay from the same card. Because card network fees are not immediately visible to the consumers, they generally don't care about them, just the same way they don't care about privacy.
In other words, safety and frictionless trade overweighs privacy. At least today.
You are talking about a new type of digital cash, now look at some societies like Germany where about half of all transactions still takes place in cash (!). Germany is a country that's probably most privacy aware in the developed world, they don't have Google Street View for example. So instead of moving towards the unknown, privacy-aware societies seem to do the opposite, they go back to paper money.
Neither do we want to have ways of spending more, I think the humanity is slowly rolling back from the consumerist mode d'emploi of the late previous century.
So the picture is not as simple as we want it to be when it comes to earning, safely storing and spending our hard earned cash.