I think the idea that men can focus on skill development to date in a harder market is a valid one, but also misleading. This is because the dating environment for straight men currently is a
highly unkind learning environment. (Namely the feedback one gets in the environment is hard to learn from)
My understanding is that for a man, getting a move almost right can be worse than not making the move at all, for example attempting to move in for a kiss at almost but not quite the right moment. And errors are currently harshly socially judged. Hence a lot of men, particularly sensitive men who worry about making women uncomfortable, are inexperienced and feel stuck and trapped in that inexperience.
I think this unkindness of environment is a societal issue and one that cannot be levied as a failure of young men. Ultimately it is costly for all, men and women, as both would be better of and happier if the men knew what they were doing, and knew how to appeal to women.