It's because of envy, which leads to wanting to destroy, even if you destroy yourself.
It's because of the desire for power, domination and control - the Dark Triad for women (feminism is the Dark Triad for women). The Dark Triad, for men and women, is not what those in the Manosphere think it is. In reality it's a horror.
The Dark Triad is just narcissism, and if one characteristic that can be used to describe narcissists, it's envy. Which is why I point women's greatest flaw and pride/hubris (thinking they always right) and envy (it's right there in the story of the Garden of Eden).
As Sam Vaknin writes, "Envy is at the core of my being: seething, foaming-at-the-mouth, destructive, morbid, and potent. I envy other people's happiness, possessions, accomplishments, status, spot in the limelight, contacts, you name it. I disguise my envy. I rationalize and intellectualize it. I do my utmost to ruin the source of my frustration while pretending to be his or her friend. I lie sleepless at night, rebelling impotently against the injustice of it all, that any one should surpass me, perfect as I am."
Vaknin is a self-aware narcissist whose narcissism put him in prison.
I've also pointed out not only is feminism based on the envy of men and the desire to unwittingly destroy them, in many ways so is the Manosphere, with its denigration of women.
As Randi Kreger writes about the envious: "[The envious] feels contempt for those he envies and puts them down vociferously--sometimes to their face, sometimes not. This restores his upside down world where he's always on top."
Since women as a group (Hivemind, that is) destroy everything they touch, they have to be kept out of certain things - politics, for one. Education is another, unless you want to make education a real degree along with learning Latin.
Women are never going to go in STEM. They aren't going to write computer games, just whine they want the games changed to be more "female friendly."
Mythologically women are either nurturers or destroyers. Currently, the destroyer is ascendent. But not forever. For that matter, not even for long.