Even the men not getting any do not realize how easily other guys are getting sex. Its like they live in separate universes. Whats more, eventually these women need to settle down, often with men who are their "equals". But they do not see them as equals, as they have been having casual sex with men way out of their league for years. This is a deep societal problem and one that surely adds to unrest among the population.
How do I know all of this? I lived in NYC for five years and ran in circles where we were usually the best looking guys at the bar. The ease with which some friends got women was shocking. Especially in contrast with other circles that I ran in, specifically nerdier programmers working at FAANG.
If I said the above out in the open I would lose my job. But its reality.
EDIT:
I agree that women should be free and any opinion other than that is heinous.
But I am going to add a bit about the sexual revolution part, because I think it is critical. Monogamy is about stability in society. Half of the reason for pushing for sexual restrictions and monogamy was because it stopped uprisings and stabilized relations. It has been a cornerstone of western society. All of these restrictions from the past had a purpose and stood the test of time, they were not random. When we remove those restrictions and societal opinions of sexual conservatism, we throw out thousands of years of hard learned rules across societies.