No, I'm not baffled by that. I don't know if I should feel miffed that you chose the most easily comprehensible possible thing for me to be baffled by!
Look at the post I was responding to, and the post that he was responding to and maybe it'll make more sense:
That's what I'm baffled by; that people don't seem to completely misunderstanding the argument that he's making, which is that China needs to make the kind of changes mdubs talked about in his post:
And the litmus test for the success of that project would be the perception of immigrants like the author that they are "viewed as a Chinese not just in my own mind but in the minds of my fellow Chinese."
And as I pointed out in my post, because of China's demographic issues (in the next 30 years, they are going from ~1.4 billion with ~100 million old people to 1.3 billion with 329 million old people, with only 1.6 workers per retiree in a country, followed by a demographic collapse in which their population drops by ~400 million to just around 1 billion.), they are going to need to attract immigrants. How are they going to do that?