The west doesn't believe in genes. Because of this they think a massive civilization like China will just crumble as soon as they have an "economic downturn". As if their buildings will turn into dust and their average IQ score would fall by 20 points and they would just starts murdering each other in gang wars because of GDP. None of that is going to happen. China will outlast the multiracial parts of the west the same way civilizations like these have outlasted any empire that tries to remain at the top by selling their land to industry and mass migration. How many transhumanist "economy" empires throughout history have survived until now? Zero.