Here's What the 'Manosphere' Gets Wrong about Cuckoldry | Scientific American

have adopted the term cuck as a more general synonym for weakness, desperation and foolishness.

It's more fundamental than that, it's valuing someone else's selfish benefit more than your own, the more they are unlike you. It's more than just universalist and non-egoist sentiment, it's actively anti-self.

The entire premise is "Man degrades other man. Women most affected." And she doesn't get the origin in the popularization of the insult: porn. It's not about "men secretly being cheated on", but men willingly and publicly degrading themselves as inferior based on gender and sometimes race.