Given that most women have experienced sexual abuse or harassment by that age, and universities offer very little comeback or protection, and students away from home are more vulnerable than previously, and reporting of rape and sexual assault is very low - and certainly from what I remember of university myself - it is likely to be much higher.
I think a PP was challenging the idea of widespread sexual assault of women at universities.
I've been an academic in UK HE for 30 years. I work in a pretty progressive area of the humanities, and have worked in several institutions - not all big city based, and in different geographic areas of the UK. Over that whole period, almost every year, at least one of my female tutees discloses to me that she's been raped.
She then generally goes on to say she doesn't want me to take any action (I offer), and that maybe she was at fault by getting drunk, or talking to a man, or going to a club, etc etc etc.
I have around 30 tutees a year, about 75% female. So do the maths.
And I don't suppose that my experience is terribly unusual - in fact, I'd say most women academics - if they are halfway good listeners & a bit sympathetic - have similar experiences. We also regularly hear about the routine sexual harassment they experience at student nights in clubs, in pubs, and on campus.
These young women have already internalised rape culture: they know that it's highly unlikely their assaulters will be punished o stopped. They've already internalised the victim-blaming of patriarchy.
The other sobering thing to think about is that sexual harassment & sexual assaults, up to & including rape, are rarely strangers. These young women are assaulted by male students.
And it's our DSs who are doing the harassment & assault.