Never before could a woman open an app and literally have hundreds of men at her door within minutes (all while men struggle to get a single match). This has created such an imbalance that the women are able to reject roughly the bottom 80% of men leaving most men struggling to get the attention of the bottom 20% of women.

And yes, there are lots of men with shortcomings, physical ones, that have rendered them out of the modern dating pool whereas in the past they would have met an equivalent woman. That's no longer the case as that equivalent woman can demand a much higher quality man -- there's an unlimited supply of men to pick from.