Young Male Syndrome (YMS) refers to all the problems that occurred when a society had too many single young men who had little chance to mate or gain status. Historically, this could become an existential threat to society. The other issue with YMS was that even if your society was not destroyed from within, it could be outcompeted from without if your young men were not properly socialized, motivated and employed.

I have been doing some reading, and many experts are suggesting that today's technology levels may make the dangers of YMS obsolete. First, can porn and the online world sedate and pacify infinite numbers of failing and unattractive young men. Second, in a world of robotics and computer chips, your nation or society's overall competitive standing is much less reliant on maximizing the production levels of your lower-tier men, who are usually less intelligent and capable. Rather, more than ever, what matters is optimizing the value of your intellectual and productive elite, which will still be the extreme right-tailed men, and then these days your more temptation resistant, high impulse control elite worker bee women.

The corollary to this argument was that the dangers of YMS were what incentivized elite men and average women to tolerate widespread, enforced monogamy, which was a suppression of their natural sexuality. But perhaps now there is much less reason to not let women be as selective as they want to be.

EDIT: Is even the idea that high rates of young males who cannot find a partner have EVER, even historically, been a serious danger on a civilizational level actually untrue?