That is because sexism is aimed at women.
Men are hit with crossfire, i.e. strict gender roles imposed upon women relate back in the ways in which strict gender roles then effect men. But they do not do so as strongly.
To take a telling case, look at the incredibly wealthy men who lead fashion (haute couture). Most of them are pretty effeminate.
Now, look at all the butch women who are wealthy-
Oh wait, there aren’t any.
This doesn’t mean that men aren’t derided for being feminine, or that gender roles do not also hurt them. But they are not directly imposed upon them.
This plays out in the same way that trans men want to reclaim the t~slur. The word is aimed at trans women. Google it. Guess who shows up? Exclusively trans women. Guess what population that word is aimed at? Trans women. Exclusively.
However, trans men sometimes are hit by the word, because they can be misgendered as trans women. This absolutely does fucking not give them the right to reclaim this term. Because this term does not apply to them.
The same way, as if I were to be called a racial epithet to a race I did not belong to. I could not reclaim that term. Nor could anybody except for the people to which the term is levied at.
tl;dr: men aren’t the direct victims of sexism, they are collateral damage, in the same way that trans men sometimes get hit with the t~slur even though it’s aimed at trans women.
(Source: iuwaehfoaiuwhefoiaulfjqn)