This isn't just politics or modern social conditioning, it's how they are, even during the age of the Romans there was ample evidence of women's fundamentally destructive nature. The only difference between a woman who betrays her people and one who doesn't is the first had the more opportunities to do so.
Taking away their rights only works in a low level civilization, you can not have this type of behavior on a space colony where social instability means the life support systems fail.
