For the digital yuan to replace the US dollar, the global economy must have a need or interest. At the same time, there should still be understandable risks of using the new world currency. The question is - how do you think - is the current situation in the world economy in order to create a need to change the international currency of mutual settlements? Is there an assessment of the risks of working with a digital currency that is completely controlled, let's say honestly, by the ruling elite of the country, where there are a lot of nuances, underconfusions, information hiding, and hidden goals? For example, the United States cannot immediately stop or somewhere ban the circulation of the dollar. In a digital exchange protocol, this can be done quite easily, but I am sure that many of the technologies underlying the digital yuan will be classified and remain proprietary.
Firstly, ever nation that wants to get out from under the thumb of the US-denominated financial system has an incentive to adopt the digital Yuan. This includes countries that want to evade US sanctions, as well as those that want to weaken US hegemony. At a minimum, this means Iran, North Korea and perhaps Russia to an extent, although the Russians are more likely to attempt a Russian digital currency than to become subservient to China. But as a strategic geo-rival, the Russians are very much interested in weakening the US globally.
I understand your logic. But let's be realistic - those whom you indicated (the countries who want to avoid punishment / sanctions) are essentially a "by-product of civilization", and their share in the world economy is a drop in the ocean! For all the "greatness" of Russia, it is barely creating 1.5% on a global scale, and now it is in stagnation and will continue to fall. North Korea, sorry, this is nothing at all. The rest will give a total of 1-2%. All this is at the level of calculation error
And the position of China, it seems to me, is not as obvious as exactly the "world leader". I think their goal is China as a single and main center in Asia, Africa, and possibly South America. But the role of the world "leader" and the world "gendarme" is clearly not for China, for many reasons.