The video talks about the nature of competition at schools and workplaces, 996 working hours, the phenomenon of involution, and the extremes they have reached.
The almost endless pool of workers is what drives 996. If one doesn't want to work, there is always someone else to replace him/her. Remove that from the equation and 996 will be no more.
Unless you divide China in 40, 50 states, you can't. There's just too many of them. Plus they used to have a 10 kids per family tradition, so... that's how you get to a few billion people and an endelss supply of workers.