The final point I want to express is that both Bitcoin and fiat currency will exist. Bitcoin needs the support of various countries, including superpowers. Bitcoin is more like a stabilizer that coordinates the economies of various countries to resist economic inflation. There is no racial discrimination, no ethnic hatred, no dirty trades and conspiracies, and no war.
Yes. Bitcoin and fiat currency should exist.. And also not all people can adapt bitcoin so they need fiat.
Bitcoin started without the support of sovereign states but it still grow and survive until now. But in case they get involved with it and be in a good way it was a really good news and can make a great impact on bitcoins. But if they were just going to set limitations on it then no. Bitcoin doesn't need them because it was built without it or intending to be dependent on it.