People often argue that the real-world success/failure of an idea is evidence for its correctness or lack thereof. For example, many argue that the failure of the Soviet Union is evidence that communism is wrong; similarly, many view the decline of religion in the mainstream contemporary West as yet more evidence that religion is erroneous.
This is another instance of that type of argument: if, in the long-run, collectivist cultures grow and individualist cultures shrink, that would be evidence that collectivism is more correct than individualism.
Of course, an individual need not care about such arguments. An individual might be happy to be communist, non-communist, religious, non-religious, individualist, non-individualist, whatever, even if that was in some objective sense wrong. They might just not care if it was.
This is another instance of that type of argument: if, in the long-run, collectivist cultures grow and individualist cultures shrink, that would be evidence that collectivism is more correct than individualism.
Of course, an individual need not care about such arguments. An individual might be happy to be communist, non-communist, religious, non-religious, individualist, non-individualist, whatever, even if that was in some objective sense wrong. They might just not care if it was.