Feminists of the 70s did not give two fucks about intersectionality or helping the oppressed…they only cared about white women getting the same slice of the pie as white men.
Ya it’s an effect of the passage of time, that’s why we label the 3 waves of feminism in America. the movement got broader and more inclusive as the years went on. Which upset some of the older feminists like JK Rowling who refused the memo of equality for all.