Feminism is just one (but a very efficient one!) of the isms, and isms are ideologies. … One should know the purpose(s) or goal(s) of ideologies.
Feminism, sexism, genderism function like all other isms: a very few people ascend from the upper to the middle class, if there is one, but most people descend either from the middle class to the lower class or within the poorer becoming lower class to those who have nothing to eat, whereas the very few of the upper class become richer and richer, thus more powerful and more powerful. So feminism, sexism, genderism - like all other isms - serve the rulers and obey the orders of the rulers who want to become richer, thus more powerful than they already are.
Maybe the following chart can illustrate the prospective ratio of the TFR and the GDP per capita:
For comparison: viewtopic.php?f=3&t=190233&p=2602847#p2602833 .