It's because men aren't entitled, picky bitches who have insane standards. Men are far more flexible about looks and forgiving of any flaws, there is always a man for every type of girl.
They readily admit that females can't be incel, but they're either extremely dumb or in denial if they can't think why. It has been gone through a million times.
And a woman wouldn't have to be incel to hate men, all women already hate every sub-Chad male.