where the system will use a method where the government no longer has to decide when they can spend their money, how much they can spend, and can't even tax most of their transactions again. Those are the things I believe are part of the reason why most countries governments don't want to fully accept bitcoin.
Yes, the government is not as naive and stupid as we think, they know everything about bitcoin and they even know more about bitcoin than us and that is why they are harsh on bitcoin. They realize that if bitcoin becomes popular without control and people freely use it, their power will be shaken and even collapse. The government understands bitcoin very well and has always tried to stop it from the very beginning but perhaps they failed, and now bitcoin has become so popular that it cannot be banned. They began looking for ways to legalize it with a series of regulations, and the hope that it would be controlled and would not let it affect their power.