Most liberal women are both unattractive and annoying, no matter what success they might have professionally. Young males are better off avoiding them. Look at single women. They are overwhelmingly liberal and were the misfit type in high school and college. Married women are not. They lean GOP and were more the sorority type in college.
Most men don't give a shit if their wives are successful professionals. Most value a host of other things before their mate's earning potential. Plenty of attractive and conservative women. Those are the ones who get married and are happy with life. Many could be very successful professionals -- have my friends' wives (and mine) have MDs, MBAs, or JDs. But most give that up once they have kids. That's what it's like in my social circle. Maybe 10% of the wives keep their careers as it is too difficult to balance with raising kids. And my friends and I make enough where we don't need dual incomes.
I think young males seeking mates and liberal professionally successful women don't want each other equally.