I was there. There was a general awareness of feminism starting to pick up momentum in 1964 and thereabouts. It was mostly called "Women's Lib" in the mainstream media. Some writers and commentators in the media scoffed at it, some found it overdue. This wasn't unique to feminism, of course. Everything from the anti-war movement to black civil rights was widely misinterpreted for years. It took a long time before the average magazine article or TV commentary seemed to understand anything new that was coming to change things. (Actually, has that changed?)
Stan Lee and Jack Kirby were Old School in every sense. Each was married to his wife for their entire lives. They (and their wives) operated on the understanding that it was the man's responsibility to provide for his family. There had always been career women but they became more numerous and by 1970 or so were a major presence. Their comics reflected this gradual awareness, just as it reflected their changing attitude toward war. From gung-ho Kill the Commies to more reflective and thoughtful awareness, Lee and Kirby were about on a par with the average American of that era.
Kirby seemed more genuinely interested in youth and counter-culture. His FOREVER PEOPLE is a good example. Lee, you can't be sure of. He was more professional in the sense that he knew the audience he was aiming for and he gave them what he thought they would like.