The drop starts happening in 2010 which is ironically when dating apps start taking off. And we now have an increasing number of digital nomads moving to places like Thailand to find their spouse citing dating apps for making dating much harder in the West. [1]
Maybe turning dating into a casino where one gender holds all the cards is not a great idea.
I suspect that blaming women for lack of success at dating is the actual reason for the lack of success at dating.