Feminism as a social movement frames sexism as one-sided, which spreads and promotes widespread ignorance about men's issues. Especially the idea that men don't face sexism on an institutional level (or if they do, it's less harmful or perpetuated exclusively by other men), which is often used as an excuse for anti-male sexism.

Men face significant levels of discrimination in society, which both men and women take part in perpetuating, and these issues need to be specifically and explicitly fought against for there to be any real progress. When feminists are confronted with evidence of discrimination against men, instead of admitting this, they usually try to fit the evidence into their existing worldview because it's what they've believed their whole lives. Like insisting that that anti-male sexism is solely caused by other men, or that it's caused by patriarchy, male privilege, or "benevolent sexism".

A lot of feminists fail to live up to the ideals they think they believe in. It's a common issue among people in general, but it's especially hypocritical and harmful for feminists to do so while claiming to be against sexism. Like being against body-shaming but still body-shaming men. And many feminists hold sexist views against men, sometimes without even realizing they're sexist. Instead of fixing this when called out, a lot of them insist it isn't a big deal because of the false idea that men aren't significantly harmed by sexism.

And some self-proclaimed feminists literally hate men. They're not the majority, but there's far more of them than is acceptable in a movement about gender equality. The fact that they feel welcomed in feminist circles is a problem.

Saying misandry isn't "real feminism" is ultimately just a way for feminists to absolve themselves of guilt, responsibility, and recognition that they themselves might be part of the problem. Instead of recognizing and condemning misandry within feminism, fighting against the harm it causes, and self-reflecting, they pretend the problem doesn't exist.