The article in the op IS claiming that, however.
[quote] These basic cultural precepts reigned from the late 1940s to the mid-1960s. They could be followed by people of all backgrounds and abilities, especially when backed up by almost universal endorsement.
Even the deviants rarely disavowed or openly disparaged the prevailing expectations.
[/quote]
Oh and +++3 to the Stephanie Coontz book rec. Amazing how we have whitewashed our memory of previous decades, even ones many people living now lived through.