The problem is that your ordinary citizens do not know the difference between the two. If CBDC is "government supported," then it must be legal, right? Educating the public in some way about actual value support seems to be the only way to ensure that CBDC has nowhere to go.
CBDC is the responsibility of the central bank. The government will determine which goods and services are legal. It will be programmed to enable users to purchase from a list of legal goods and services, but it will also be programmed to deny users the purchase of illegal goods and services. So I posted this post and hope it can affect some people who have misunderstandings.