I like you wild greens so I assume your intentions are good, your heart pure, etc but
While author is simplifying a lot of stuff (e.g. it is very silly to think this happens overnight one generation to another; there are huge differences historically in class roles and what it means to be "patriarchal"; many men still wield traditionally patriarchal roles etc) the basic thesis is pretty impossible to argue with, that we are gonna have growing pains as we figure out what and how men are supposed to be and do in this world, that when the entire culture and its myths are set up around the idea of man as provider and authority, there will be transitional awkwardness. What kind of models and life narratives to sell them, etc. It's also not a new argument, Douthat made this point quite famously w/r/t to Girls, which is a show where, famously, the men are all huge messes. Compare Adam Driver with Don Draper. Both incredibly disturbed individuals, and Don himself is in the midst of the cultural sea change we're talking about, but one has a sense of archetypes and models to follow (as he makes himself a fiction, as we all do when we live up to myths) and the other doesn't.