Yes. . . going back to your original post. . . .I know what you mean about women being less thoroughly frisked.
I've always presumed it's because in today's times,no one wants to be accused of over-rigorous inspection which might be construed as some form of assault by a woman? Or maybe they didn't have enough female security staff to pat down the ladies?
Going back to my wadges of sanitary towel days,I could have hidden a small handgun in amongst them,such was their thickness.I don't remember them ever being actually handled or inspected by security staff,once they had realised what they were. . . .