I hear in China CBDC works with facial recognician to automatically deduct fines for jaywalking etc in real time as the misbehavior occurs.
ping for later.
Once they mandate gov't issued crypto-currency, most won't recognize they've given up control of what they are "authorized" to buy.
Such as limits on gas purchases for your vehicle.
Once your 'protest' is limited to a 200 mile radius from your home, they won't really care how mad you are.