The further demand of economic globalization, but in the face of the US dollar-based SWIFT settlement system, people feel that there is no freedom and it is completely controlled by the United States.
The risk of sovereign currency is that once the country’s economy collapses, the value of the sovereign currency will quickly clear to zero. This kind of thing happens especially in some underdeveloped countries with abundant resources, and at least they don't have much right to speak in international trade. Take Zimbabwe, for example. The actual value of one trillion yuan is less than 10 U.S. dollars.

Bitcoin is very difficult to anchor value. For many sovereign countries, some hope that Bitcoin will anchor diamonds, some hope that they will anchor oil, and some hope that they will anchor graphene. , It is difficult to unify opinions.
Bitcoin is currently experiencing huge volatility, and the price cannot stabilize. After 20 years, we cannot accurately predict it. I also hope that the price will stabilize.
Currently, the SWIFT settlement system is used globally. The United States does not allow Bitcoin to become a super-unsovereign currency, because the United States, as an emptied country, is completely supported by a financial virtual economy. Without the real economy, the United States has become accustomed to plundering the world's resources through the tide of the dollar.
It is difficult for super-sovereign currencies to form a unified global consensus. Bitcoin needs time and more tolerance.For example, the Keynes plan mentioned in the OP article.
Countries with large resources, powerful military countries, underdeveloped countries, countries with different ideologies, countries with different religions, etc., it is difficult to balance sovereign countries and interest groups, and it is difficult to formulate a plan that can satisfy the interests of all parties. And many countries are very unfriendly to Bitcoin.
Bitcoin is still very young. The first step is the support of major powers. I hope Bitcoin can get the absolute support of Wall Street alligators and giant whales, because in the 1960s, the International Monetary Fund launched the super-sovereign currency SDR , But it is difficult to get the support of the United States, which has a veto in the IMF. So if you want to solve this problem, you still have to look at the attitude of the United States.