Yes, if a woman wanted to overthrow these knightly orders through brute force, the way a conqueror would attempt to, she would have no chance.
Guile is another matter.
As far as the campaign being about men looking to get laid, I can only repeat what another poster has said in some other thread: there is better porn on the internet.
Edit: The purpose of the story was not so much about women, although they enter into the story, but about sexual morality and two opposing views of life.
The secular, liberal, pagan view and the conservative, religious view.
These knighthoods are two evil organizations, but each follows one of these philosophies.
Now it is true that neither of them are good, because the conflict here was never between good vs. evil.
Now with the entrance of PCs into the events that are transpiring, things become different because the PCs can make choices and choose to be good.
It also provides for an interesting campaign since it creates a conflict of values within the PCs.www.enworld.org/forum/showthread.php?308425-Knights-of-the-Virgin/page10
The order's logic goes something like this:
If men are being conscripted to fight in the army, why shouldn't women be conscripted to produce children to fight in the army?
Most RW believers in chastity praise women who have many children so there is no conflict.
They are going to be worshipping a virgin as their deity. (Similar to the Virgin Mary)
Not to mention they're anti-sex.http://www.enworld.org/forum/showthread.php?308425-Knights-of-the-Virgin/page11
They are anti-sex because they believe that sex is evil and that a person should only have sex for reproductive purposes and not for fun.
Religious conservatives in the America believe in promoting family values and having lots of children and they are anti-sex so the apparent conflict between being anti-sex and pro-family (at least allegedly pro-family) doesn't exist.