If y'all wonder why I eventually learned to steer a wide birth around radical feminism, consider what you find at the link below.
This person is among the worst of the worst but nevertheless, a good subset of the attitudes and beliefs in that blog entry were not uncommon among radical feminists of Boomer age and beyond.
It's almost a kind of gender-based nationalism with much of the same potential for bigotry toward outside groups that nationalism entails.