This is just Sino brainwashing in the East as workers in the West move toward a four day week. Does anyone really expect the 996ers, on their death beds, will say, "I'm sure glad I made oligarchy great again. I regret not going the extra step to be a 10-10-7 worker."
Perhaps 996 is the perfect life for a population of incels who are not going to make family a significant element of their lives.