Many of the responses in this Reddit are right on point, in my opinion.
And Jalimon makes an excellent point regarding the increased cost of living.
https://www.reddit.com/r/Futurology/comments/1195kb7
Everyone is behaving exactly as expected based on economic theory.
Young women at the height of attractiveness upgrade their lives by renting, directly or indirectly, long or short term, the valuable patch of real estate between their legs. Much of that renting in a relationship is to older males with more to pay. We can argue that they have more game, but they have more resources and experience to have game with.
Faced with high barriers, a not insignificant number of young men simply decline to participate.
Many of the young men trying to make something of themselves invest their time in an education and training process that for many high-paying jobs now takes a decade or longer. Some of them have mates who were willing to take the difficult ride along with them. Those that don’t not surprisingly look to date younger women once they become successful. The nature of a smaller percentage of people becoming successful, with more of society‘s resources accruing to them, means that there are fewer male targets for females. And as an aside, the greater education and occupational advancements of young women means that it is even more difficult for them to find someone who will “upgrade” their lives.
Everyone is acting rationally based on the variables, even poorly dressed young men playing a modified version of Twister. Read the good comments in the Reddit thread.