Generally seems like a good idea, minus the part about it being state owned and operated. If it's operated by the state, it will probably be a disaster. Many governments can barely keep their Windows machines up to date, leading to ransomware attacks. It would be a shame if people's money were held hostage for ransom.
On the contrary, payments is critical infrastructure, like roads or social security, that needs to be publicly owned and operated, immune to the rise of cancel culture, and other whims of the techno-elites. No one should be denied their right to basic economics because someone in power at a private company disagrees with their politics
So if one day Bitcoin becomes the norm, do you believe it has be handled by the government? If you think so, how do you think the government will be able to enforce that?