The problem with this theory is that feminism benefits lowlife men (omegas) more than anyone else, including the elite (alphas). In a moral, patriarchal society, alphas would still have a wife and maybe a mistress, but omegas would have nothing. Feminism benefits alphas somewhat in making more women available to them, but also harms alphas in that their wives are more likely to screw them over.
I see feminism as a degenerative cultural disease where women become essentially common property. The result is known as the tragedy of the commons
where women are overused and become hostile sluts unsuitable for marriage. The biggest supporters of this system are omegas, followed by women who support it because their instincts aren't designed for this kind of decision-making, so when given inappropriate authority, women make decisions that are contrary to their own self-interest. Alphas simply want power and since in a democracy omegas and women are a majority, alphas will side with them to be elected or just popular.