I actually agree with them that China is absolutely on track to surpass us, though the funny part is they never stopped to think about why that might be, nor what it will mean for Western countries and immigration going forward.

The writing is really on the wall for the death of "a country is an economic zone migrants should be free to enter and leave at will" line of thinking, but regaining the cohesion we once had and the previous pressure for migrants to actually assimilate rather than just forming closed satellite communities may take longer still.