Honestly, I have no idea. It may be that women cannot be ordained to the priesthood, which is very poorly misunderstood by many people, Catholic and non.
Stereotypes about Catholics seem to change with the times (and by place). Before feminism, in the US at least, Catholics were seen as morally loose - they drank, they danced, and they obviously liked sex because they had all these kids. Part of the disdain was also tied to the immigrant groups that tended to be predominantly Catholic. Irish and Italian were considered non-white.
After feminism, and the importance of “choice” - being a codeword for abortion “rights” - Catholics seem to get confused with hardline Protestant fundamentalists (the lack of knowledge about religion, at least in the US, is astounding). Any “restriction” on sexuality was instantly connected to the drudgery of being a barefoot and pregnant woman in the kitchen for 20 years.
I’ve been told I’m oppressed by simply being a Catholic woman ever since I converted, but I feel a lot freer.