So many assumptions about CBDC coin and it's very possible that the government will be using the digital coin to control just about anything you will do in the country. One theory I've read was that the government will allocate funds where you can spend a percentage of your money to a particular industry and you can only spend some of it on your clothing and so on. That's not good for sure.
I think it's best for countries to allow BTC or any other cryptocurrency while they also use CBDC coin. Allowing people to buy BTC with CBDC app is freedom.