>>716336542 (OP)
It would work fairly well in the beginning. The women would act orderly, they would cooperate, they would think "Who needs men, we got this, girls!".
But since there's at least one man around, it would not take too much time to start delegating tasks for him to do. Small things at first "Hey can you open this pickle jar", or "Can you make sure there's not a radroach under my bed", and again it would be fine for a while. Some women would seize the opportunity to gain his attention, because well he's the only man around, so he's at the highest possible value any man could be, and this will inevitably lead to conflict. There's only so much time, so much dick to go around, women will fight each other over his dick. That's not really a problem though, after all, women are inconsequential to men's lives, but what is consequential is his abilities, more importantly, lack of abilities.
If he can't fix a woman's mistake, God knowing she'll make them, she will NOT take accountability, and delegate the task for him to fix. If he can't fix the problem, let's say the water chip broke because Jessica got mad at Bob for giving his dick to Suzie that day instead of her so she rightfully broke the water chip, if Bob can't fix it, everyone is fucked.
How badly will it end up? Well, everyone died of dehydration after 3 months, so very badly.