NASA is supposedly scrapping the bottom of the barrel reserving RTG fuel for most critical and valuable missions. ESA can't dream of RTGs even where they would be extremely valuable (like Rosetta/Philae). Meanwhile - yes, a lunar lander is a big step for China, but others have done it a long time ago; if anyone at NASA suggested a robotic, RTG-powered mission to the Moon currently, they'd get laughed off the complex.
Similarly, USA only ever produced about 500 pounds of tritium while China sells it on Aliexpress in keychains, $7 a piece.
Are there any publicly available estimates on Chinese stockpile of Pu-238 - their capacity of RTG battery production?