Ending patriarchy requires both men and women to reject it. But the ones calling for for an end to patriarchy are the feminists -- which includes both women and men. Feminists absolutely, positively call out women who are guilty of entrenching the patriarchy.
That's not few women. It's lots and lots of women. And lots of men, too.
I disagree that they are particularly willing to call out instances of women entrenching the patriarchy. I think this probably has to do with a root disagreement about the scope of what is considered policing gender roles.
It's true, for instance, that feminists are more likely to criticize a mother who tells her son not to play with dolls, which is good and something I agree with. It's just not the primary mechanism by which women enforce gender roles, which is partner choice. That's not to say that women shouldn't have the right to choose their partner--of course they should--but the patterns of how women choose partners enforce toxic gender norms, and many of the most toxic aspects of gendered male behavior arise from men navigating that landscape.
As a concrete example, consider bisexuality. The majority of women dislike the idea of choosing a bisexual guy as a partner: he's considered less masculine, or dirtied, or some kind of perversion of masculinity. This is their right, but it's also shitty. The problematic aspects I want to call out are that 1) the majority viewpoint among women about bisexual men is still very prevalent among feminist-identifying women, and 2) when someone expresses frustration at these collective choices, feminist-identifying women are far more likely to criticize the frustrated party instead of the toxic gender norms. The net result of this is men being terrified of homosocial affection and remaining closeted so as not to scare off potential partners, both behaviors most people would consider expressions of toxic masculinity.
This pattern repeats itself across a lot of different forms of gendered policing. But many feminists refuse to acknowledge it, because they don't acknowledge that partner choice can be a mechanism for gender role enforcement.
Regardless, I do hope everyone will call out policing of gender norms whenever we see them. Best wishes.