by Igor Rogov
The major shift came in the 70s because of massive economical and legal incentives for males and females to switch and/or abandon their social roles which roughly coincides with the final leg of advancement of neo-malthusian theories on at least partial deindustrialisation and tighter population control of the West and fallacious practices of massive government-sponsored programs to achieve these goals.
(The Club of Rome published a book entitled The Limits to Growth in 1972).
Since then there were no attempts made to rectify its fallacies or to undo the damage that has been done.