AITA for telling a fellow student to have some shame about what she talks about?

This isn’t really a big deal but I figured it would be nice to find out what people think these days. There’s a person in my study group at university that loves to talk about stuff that traditionally you don’t much mention socially.

She talks about how big and heavy her tits are, that she ate something and it caused her gastric problems, etc. Today she was talking about how her brother left semen on her wall.

Other person mentioned that she always talk about such topics to which she replied that “oh I’m just like that, I don’t feel ashamed talking about such topics” and I told her that “maybe you should”. She got irritated and just said that it’s not the middle ages. Other people just kinda laughed it off.

I mean, was it like, rude to say that? I am hardly some kind of a prude but one can get tired of hearing about such stuff every day.