WTH? Not sure how you jump to that inference.
This all contributes to decreasing morale and unit effectiveness.
Similar arguments are made against openly gay people serving in combat.
Either these arguments are valid and both women and gays should be kept out of combat, or they are invalid and both women and openly gay people should be allowed in combat.
Of course you could have all heterosexual woman combat units, but I don't think there're are enough women who want to go into direct combat to make many units.