I don’t see the use for this.
I don't as well, sometimes I think this is just about competition for some countries (China v America for example), competition on the basis of which country is doing better with the blockchain technology, and which is using this CBDC to better their economy, etc; while for other countries, they are prolly following the CBDC trend to see how it'll affect their economy positively, I think by the end of 2021, quite a lot of countries will have their own CBDC, and covid-19 should be in it's last days by then, so we'll be able to access if this CBDC thing will help countries economically/financially.
Having said that, users should draw the line between CBDC and Bitcoin, as they are different, one is centralized, while the other is decentralized, without any third party and zero manipulations whatsoever. CBDC's should be discussed on it's own without Bitcoin being mentioned.