Your analysis is harsh, however: there are still rich people left who haven’t migrated. China is all developed, developing, and undeveloped at the same time...it is a huge place after all. There is plenty of trouble on the Chinese eceonomy to work through, and the propaganda is incredulous, but they have made a lot of progress that isn’t going to go away even when the inevitable crash comes.
China could go through a decade or two of Japanese-style stagnation if they refuse to reform and allow the market to work out bad economic blood with crashes and failures. They could also go the other way, focus on real growth and start avoiding white elephants. Let’s see.