Btw this line of thinking, which is publicly expressed by hundreds of GOP pundits on YouTube and right-wing media outlets, has ZERO traction within China itself. I've literally never heard of a SINGLE Chinese person who thinks China's current demographic catastrophe is going to undermine China's ability to overcome the United States' murderous intentions. Reversely, I've never heard of a SINGLE Chinese person or Chinese media outlet encourage China to tackle its demographic crisis in order to ensure that China will never be subjugated by the US or any other country. I feel like there is intense apathy in China on this topic from the ground up and any calls for increased fertility are always met with intense scorn and derision from the average person.
Because with even the most doomest trajection we are still talking about a china with like 800~1000 million citizens in 2100 if I'm not mistaken.
In 2050 China will still be 3.5 times the US, in 2100 China still be around double the US in population numbers. This is without taking in account of black swan events like de-dollarization, growth of global south. What happens with US numbers when global citizens don't want to migrate to the US anymore? Because the dollar went from king dollar to one of the pleb coins. The economics is not worth being seperated from family.
Then you also have to look at the US vassals in the neighborhood of China like south Korea and Japan both are also declining in population numbers and economic might.
China demographic problem will be more of a government budget problem as long as chinese people continue innovating in tech they will be secure.
Not saying they should stop fixing this it's still a problem that needs to be solved.