The US currently allows several forms of private currency: -airline miles -giftcards -the institution which controls the us money supply (the fed) is a private corporation.

The US also tolerates several giant MLMs several of which are on major stock indices (Herbalife, Amway)

There is a huge difference between the positive freedom to not buy crypto and the negative freedom to staunch the economic activity of others.

Is crypto purchased for productive reasons? Largely no. Are there productive uses like bankless wire Xfers? Yes! Is it worse than MLMs, mileage programs or gambling? No

On the scale of US fiscal horrors it doesn't even touch debacles like healthcare.