I think it's less about feminism itself, and more about radicals stigmatizing the entire group. Meanwhile, the more reasonable members of the group tend not to speak up against their own, giving the impression they're in agreement simply by assocation, which gives the additional impression the whole group aligns on even some of the most radical (or sometimes idiotic) viewpoints.
For example, I know if I read an article about how a game I like is sexist for using a "save the princess" trope, while completely ignoring the context (or how said princess is the strongest mortal character in-universe), I'm much more inclined to ignore these individuals in the future, despite the fact that I feel strongly in male/female equality.
This doesn't apply to just feminism, of course. You'll find the exact thing on console wars, amusingly enough.
NNID: Zephyr25 / PSN: Zephyr--25 / Switch: SW-4450-3680-7334
