They don't notice it because that specific aspect of the rigged game didn't affect them. I provided a little study on this matter in case you're still interested at the bottom of this reply
The differences between now and then are mostly the options we have now as a species to meet more people than boomers in the past. For example, during the cold war Russia sent a bunch of young men in anticipation for war and shipped them off to new locations that were not near their hometowns. So what happened? Since women weren't drafted they dated the remaining men who weren't fit enough to get drafted, AKA the uglier, less fit, less rich men. Of course they were probably way better looking than an incel is but still. Apply this to our modern world. Women don't need to settle with the guys they know from work, or school, or even their town. They can find dudes who are willing to be in a relationship with them in mere minutes. And endless stream of pursuers. Basically the opposite of what happened in Russia. This trend of finding people online is growing by the day to the point where women are more picky than ever about who they want to date.
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Study
Winners in a rigged game will consider the game fair as long as they keep winning
Many people are prone to believing in the just-world fallacy—the notion that our victories and failures are just and the appropriate reward or punishment to our actions. People like to continue believing the world is fair even when they intellectually know that it is not.
Researchers tested people's predispositions to the just-world fallacy by having them engage in a rigged card game. The game was designed so that one player would have a clear advantage throughout the game that would essentially guarantee their victory. They found that although both players could recognize the game was imbalanced, the winner was consistently more likely to still believe the game was "fair" and that their victory was the result of their skill and merit.
They suggest this can help understand how people react to inequalities in life. Generally, in a rigged game, their findings show that those who "win" will have a greater tendency to ignore the legitimate complaints of those who lose.
advances.sciencemag.org