In other words, male saints are well marketed.

And I believe youāre right. Given societal and customary restrictions on women in the past, I can definitely see how the intimate details of many women saints would not be known.
I think Vatican II has definitely opened the doors, through, for not only more female saints, but even more devotion to these saints due to their ministerial and apostolate involvement.
Ya know, my other hypothesis was Freudian in nature, thinking that men would be more likely to choose female saints and women would choose male saints.