Wow, I spent a couple days traveling and came back to see that the moderators had been really active here. Thanks for helping keep the discussion civil and I'm glad to see it got back on track after that.
I'm afraid I still didn't make the topic clear, as evidenced by many of the replies. I really wanted to know, can mustachian principles reverse gender inequality? Not whether forum users are more male or female, not whether women face special challenges to practicing mustachian principles. These are interesting, and related to the main question, but tangential. I want to express my appreciation to everyone who has contributed these because of their spirit of having a positive discussion (compare to the thread that went down in flames, which prompted me to start this one). I really do appreciate this, and apologize that I wasn't clear enough in my original post.
Some people have addressed my question despite my muddling of it, and raised the concern that mustachianism could be seen as promoting stay at home moms, or SAHMs, and discouraging women in the workplace. Specifically:
The women in my family have all decided to be stay at home wives, they see the men as the breadwinners, and they follow the Christian mindset that the man should be the head of the household. I do not personally agree with this gender role division, and thus I do like the idea of working and being a role model for our future children.
However, becoming financially independent doesn't mean you have to stay at home, so I don't see a problem. You can choose to work, even if you can afford not to.
Financial independence is empowering. A financially independent, employed woman wouldn't hesitate to report sexual harassment. A financially independent woman wouldn't tolerate a hostile work environment. Or even one that was simply uncomfortable.
As MMM exemplifies, in a financially independent family, dad can stay at home too. "Gender inequality" applies to men too-- a lot of men of my acquaintance expressed jealousy of my husband, who got to be a stay-at-home-parent for our daughter's last 3 years of high school. (No, they weren't jealous of him because of his super-hot wife. lol!) Ok, he'd have preferred employment, but it was a relief to all of us that he could be at home.
Wage inequality: with financial independence, any worker, male or female, is empowered to say "I deserve a raise". Financially independent women can quit the unrewarding job and do something they really want to, and that something (I believe) will most often turn out to be something they are better at and therefore (I believe) earn more money doing. (I threw in those "I believes" because I don't have any data to back up my assertions. I feel like I ought to omit them...but I believe it really strongly! Doesn't that count as much as, you know, actual evidence?)
I'm using "mustachianism" and "financial independence" interchangeably, and I realize they aren't entirely interchangeable. I'll attempt to define & summarize mustachianism in a nutshell, based on having read the entire archives last week when I was sick: Mustachianism is about achieving financial independence
and happiness through frugality
and income. I've listed above several ways that financial independence promotes gender equality. I can't think of any reason that happiness, frugality, or income would have a negative effect on gender equality, so I'll assume each of these factors has a neutral or positive effect on gender equality. I can't think of any negative effect financial independence might have on gender equality.
Therefore, my opinion is that mustachianism is a force for gender equality (male and female). For many of the same reasons, it could promote any other kind of equality-- race, religion, age, sexual orientation, etc.
Mustachianism can empower an individual.
Now, whether every individual is able to achieve financial independence through frugality & income, is another matter. Certainly there are those in circumstances that make it impossible. I wish we wouldn't judge them so harshly, but be grateful that 'But for the grace of God', and perhaps not be so smug & self-righteous when looking at those who could but don't practice our own frugality. (I hope I didn't just derail my own thread...)