The USA also pushes for BTC, not for CBDCs of any sort, so I do think there is no point in thinking that these centralized coins would kill BTC. They would just exist to be in the hands of the appropriate governments they were created by.
All centralized coins are build because of greed, they don't have anything in common than greed alone. Look at the meme coin same Donald Trump that is pushing for crypto environments in the US, his team made launch a meme coin and held 80% to their self, who does that my if I may ask? Look at Bitcoin, there is nothing like tokenomics, this word was invented by altcoin people and how they allocated share of the coins to their own wallets.
At worse, Bitcoin can be in exile if all the government decided to ban Bitcoin but there is no any justifiable reason as to why governments can ban Bitcoin, if they say Bitcoin is not what they want, they should check their own fiat they have built and they it is to the environment, there is nothing they are going to complain about Bitcoin that doesn't exist in their own coins, they are way even worse than the ways of Bitcoin.