What a ridiculous argument for tax evasion. Your tax money also supports elderly care, orphanages and a range of essential services that you have already benefited from. What you are doing is immoral - freeloading.
But with absolute government control over the payment rails, such activism is impossible without a sword over your neck.
Also, Russia is being sanctioned through freezing their USD accounts and imposing financial sanctions such as suspension from using SWIFT.
If crypto is more wide-spread, then it will become more difficult to impose such financial restrictions to Russia and other international pariahs.
I never said to outlaw crypto or paper currency but I just brought-up that crypto is just a tool that can be used against and for such governments.