Illegal immigrants don't use banks at all.
And I have paid for cars and expensive things in cash myself because I value my privacy.
If crypto is banned and kyc and cash restrictions take place I will be forced to work with shady people and only hope they cause more harm to this messed up society that wants to take my liberty away. I would gladly fight in or support civil wars for this cause.
Since the dawn of civilization, it has been a right of a free person to own what they want and barter it or exchange currency for some item.
The governmemt does not get to understand or track what sources I get money from. Before the internet, no government cared so long as we paid taxes on all our income.
Find another way to prevent "shady" stuff which fyi will not be deterred one bit, criminals would trade rocks as currency backed by a bigger criminal before letting this bullshit stop them. It's my unaluenable right to not be forced to do business or hand my earnings by default to a third party company be it banking or insurance. May society burn before that happens.