so i have two past questions (a bit old, so this is not a "why didn't you check before asking" passive aggressive comment or anything) that are about disagreeing with this angle, so i'm just gonna link those

https://retrospring.net/@plumeriade/a/112250139459196431
https://retrospring.net/@plumeriade/a/112272257913605668

all that above said, there are definitely fujos out there who are solely male-focused or who make really misogynistic posts, etc. and we all know i've complained about pro-life rhetoric in mpreg (especially omegaverse), which definitely counts as supporting patriarchy!! but that's more about specific people, specific attitudes or tropes, not just being a fujo.