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.
in any case, each government will eventually allow Bitcoin to be used as a means of payment, as well as an asset for investment. but governments are unlikely to consider Bitcoin as the main or national currency in their country. If the government has a goal to create its own national currency, then in any case they will create their own blockchain and their own coin, because they will still have distrust in Bitcoin, and the secrecy of Satoshi Nakamoto will always put them on guard.