Perhaps because most people where I live are basically feminist in that we believe in equal rights (though i'd just say egalitarian). The people who really stand out tend to be extreme, and from having met a few real hardcore feminists irl who were basically just misandrists I do see those types as a problem especially if they're accepted into politics.
I think the narrative atm is that men are actually behind in education in comparison to women and aren't doing as well, higher suicide rates, the legal system still treats women differently and men worse, so i imagine mens rights groups see the extreme forms of feminism today and feel like its an issue/supremacy group.
just my 2 cents