Anyone who supports universal welfare (universal basic income), as Andrew Yang does, has to support the income tax, because no one other type of taxation can raise the revenue necessary to fund a universal welfare program.
The consequence of having an income tax is that all financial transactions have to be subjected to warrantless mass-surveillance, and there has to be imprisonment for anyone who doesn’t comply and surrender all of their privacy to the tax authorities.
This means that under Andrew Yang’s administration, at any significant cryptocurrency adoption levels, the government will require everyone to report every cryptocurrency transaction they conduct, and every cryptocurrency address they control, to them. It will be the most intrusive and monitored financial system in history. Instead of liberating mankind, cryptocurrency will imprison mankind to levels of surveillance never before seen.