Almost none of it is created to stoke anti-feminist attitudes, but it is certainly spread to do so.

There was this great tumblr post a couple years ago that I can’t seem to find anymore about how when feminists spread phrases like ‘all men are trash’, even if in context it doesn’t seem offensive or bigoted, people who dislike feminism will spread it to people offended by it without the additional context and say “look, see! Feminists hate all men! They hate you! Why would you as a man want to help people who hate you unconditionally?!”, and unfortunately the people most vulnerable to that type of manipulation are teenage boys, who aren’t exactly likely to seek out the context that’s been removed