I know feminist men. You can be male and support the equality of women, same as you can be white and support equality of race. The fact that you think it's weird for a male to be feminist is perhaps a sexist expectation of men in and of itself.
I am not saying that it's misogynist to believe only women should stand up for women's rights, I'm merely pointing out that there are social inequalities for BOTH men and women that you may not have considered.
I don't think equality is about letting women become men, it's about acknowledging that everyone is equivalent to one another, whether that's achieved by women remaining unshaven, or men taking pride in being stay at home dads and enjoying yoga.