That fits with their worldview, I suppose. They think that men always had all the power (this is debatable; women have always been able to influence men), and that this happened for no reason other than that men are physically stronger and will always use that advantage to oppress. Therefore, if you reset the timeline but make woman the more powerful sex, it makes sense that men would end up enslaved.

It doesn’t really fit with the part feminists often tack on, where they say women are more enlightened and wouldn’t do that, though. I guess that’s technically an improvement over the “if only women were in charge, there would be harmony” sunshine and rainbows bullshit?