Evans-Pritchard is correct. "Successful" population control programs, such as China's one-child policy, lead to an aging of the population. All these zero population zealots who have been warning the world about the so-called population explosion are really promoting a kind of demographic suicide. Nations that refuse to accept children are doomed.
The sad thing is that all of this population control madness has been forced on the Chinese people. Women who become pregnant a second time are forced to undergo abortions. Population officials in towns and villages monitor women's menstrual cycles. What a great loss of personal freedom. Now the whole concept of the extended family is dying out in China. Young people don't have brothers and sisters. All in the name of population control.
China is a classic example of how a "right" to practice birth control and to choose abortion has been turned into a state-imposed duty.
The party has decided that rapid increases in population leads to violent revolt. It is far easier to kill the babies before they are born, than to fight the adults once they have grown up. That's all there is to it.