Wait why do we want to correct the wage gap? I might care about men and women being paid the same amount for the same value of work. But that isn't what the phrase "wage gap" means at all once you look at it closely.
Perhaps I was unclear -- it's not that we want to correct the wage gap, but that it's simply part of the narrative of men opting out of the rat race. Alternatively, it's a natural correction as the cause of over-valuing income - relative to other values - declines in men as a group.
Dalrock writes an interesting article related to Dr. Helen Smith's book the Marriage Strike. I really have to bump it up on my too rapidly growing reading list. (^_^)