It's really simple, feminist theory sees the existence of a patriarchy as something unquestionable. Therefore, it tries to adapt any other phenomenon in society so it fits with the existence of patriarchy.

This is also why feminist theory oftentimes gets to non-sense. For example, the idea that systemic discrimination towards men is a product, or rather a side effect of systemic misogyny, when we clearly know that many misandric policies have been pushed by feminist organizations.

Because feminist theory holds some dogmatic views that are both, unquestionable and unverifiable, it's imposible for it to do proper analysis of gender. It's like trying to do science and never questioning the existence of God. At the end of the day, patriarchy theory is just that, a theory. Feminist analysis of gender treats this theory as if it were a scientific fact, like gravity, human biology and such.

However, that's simply what I think. I'd love to hear y'all's opinions on this.