As far as the actual object level goes, we're likely far more in agreement than you think. I absolutely want a fair system for everyone, and I'm well aware of the efficiency involved in market processes and price discovery. "Equality of Opportunity" is a lofty goal with relatively few pitfalls (we certainly don't want to punish parents for fair attempts at providing their children with opportunities), but I think we're basically on the same page here. And outright sexism is obviously unacceptable.
I think a big point of divergence between my opinions and mainstream feminist thought here is what we believe is behind differences in group outcomes. In my view, prices as a signal of supply and demand has much more explanatory power. Higher paying jobs are higher paying for a reason - they are more competitive, require longer hours, are more dangerous, more risky, require more intensive training, are less fulfilling, or otherwise less desirable in some way. The wage market is certainly not perfectly efficient, and discrimination does happen, but supply and demand plays a huge role in my opinion.
As far as I can tell, feminism tends more to see differences in group outcomes more as evidence of discrimination and other systematic problems in the system. While these problems aren't 100% solved, in my view they're getting a grossly disproportionate amount of attention.
Professor Iris Bohnet of Harvard wrote a great book called "What Works" that offers some creative solutions to the issue. Here's an interesting article about a small change implemented by orchestras in the 1970's discussed in the book: https://www.theguardian.com/women-in-leadership/2013/oct/14/...
Finally, on a personal level, I've found that even the most well-reasoned argument will be ignored when the person making it comes across as an asshole. I'm not saying you're an asshole and I'm certainly not saying that your argument is well-reasoned. But I am saying it's something you should take into account next time you feel compelled to air your opinion.