I don't think taxation is morally legitimate or long-run wise, and I question whether taxation is enforceable to the extent advertised. Nonetheless every legal technicality I have investigated to openly refuse tax payment has proved fruitless. On Dave Champion, it seems the "authorities" reject his arguments: https://www.justice.gov/opa/pr/federal-court-bars-nevada-man-promoting-tax-fraud-scheme

I don't think the "authorities" will recognize even an airtight argument for non-payment of taxes. I think if you want to avoid paying tax you need to have off-grid transactions. Especially promising to my mind is gold, which has an artificially low dollar value to inhibit ordinary transactions (eg $50 for 1tz) so even if you do report you can in theory report a much lower dollar value for the same purchasing power. In theory you may have to report capital gains taxes when you convert to paper currency, but for very high income earners that should be a much lower rate of taxation. I'm also skeptical whether converting between one form of US legal tender and another can incur a tax.