I was just so annoyed by this strategy. (Female solidarity? Did someone mention blatant sexism?) It's hard enough surely to be selected for the Survivor season, you don't deserve to be cheated of your chance like this.
The longer it goes on the more hair brained the idea appears to be. In Survivor it's pretty obvious you have to make alliances where you can find them according to your best interests. So I'd put this one in the "it seemed like a good idea at the time" basket because the lower pecking order women are being denied alternative support from the men and turn out to be more vulnerable under this strategy. They shouldn't have bought into it if they had known. Notice Ami is pushing hard for it to continue.
Coming seasons of Survivor should be fun! If they ever split the tribes into male and female again it will be survival of the fittest to vote the opposite sex out first, just in case they are planning to do it to you.