Indeed, he restates a common notion: Chinese cities are not dense and big enough. Chinese policymaking is a very strong echo chamber even among the few nominally independent technocrats.
I meant exactly this. A common saying among the establishment is that Chinese cities "got too big," when in reality the issue is the opposite.
At least in Shenzhen, the officials are split in 2 camps. One is all about importing more workers to keep the industry going, another is for turning Shenzhen more into a Dubai for rich kids.
Current policy is to urbanize the western regions to reduce regional imbalances.