“Surely you don’t believe the yuan as the new world’s reserve currency kookery?”
This all depends on CCP and Rooskie currency coordination and collusion. Also depends on the US getting weaker (under Democrat party rule) and CCP-China getting stronger — Economically and militarily.
So time will tell over the next 5-10 years
Nope. China has a mercantilist export economy. That means they must have a weak yuan to beggar other countries. If the yuan was strong, they would lose a huge advantage to have stuff manufactured there by foreign companies, especially their two biggest customers, the US and the EU.