I suspect that women aren't dating conservative men, not because they want to punish them, but because they would personally rather not date a horrible person.
It's a pretty bad spiral. Lonely men develop more extremist views, which makes them less attractive to women, which makes them lonelier, and they get even more extremist views, etc.
Like, if you lined all of the single men up who vote against women's rights, and asked an equal number of women to sacrifice their own happiness to date them, a certain number of those horrible men would turn a corner and start to act like a human. But who is going to give up their own happiness to fix some broken asshole stranger? Very few people.