> Zoom back to the 1960's free love culture and the 'alpha' males are washed out or replaced by hippies.

I wasn't around in the 60s, but the cynic in me suspects that even within hippie circles the 80/20 rule was still in effect in the dating game. Because the same thing is happening today within progressive/SJW circles - the "male feminist" types tend to proceed directly to the friendzone, regardless of the claimed preferences of progressive women.