Obviously I didn't hear the presentation, but have heard and read many similar ones. Unfortunately, many folks seem to "mishear" or at least misunderstand what the speaker is saying.
Basically, the point is that any man could be a rapist. Rapists don't have horns and tails, nor do they carry placards that say, "I'm a rapist." They look and often behave pretty much like any other guy, until they start to assault you.
Many young women (and men) going to university, probably living away from home for the first time, will be getting to grips with a lot of new experiences, probably very excited about being at uni and all the "freedoms" that come with it. Many will feel invincible.
Many may have been fairly sheltered. Many will believe that rape is something that involves a violent, deranged, monstrous man attacking a woman by surprise using a weapon and superior force, most likely in a dark, secluded place. They won't necessarily be thinking it's something that can happen when you've had a couple of drinks, or someone's slipped you drugs. They might not think that pushing someone's boundaries when making out, ignoring when they say they don't want to go further, thinking they can be "convinced" is rape.
The blokes may not believe they are capable of rape (even if they have sex with a someone too drunk to consent, or push someone to do what they don't want in the belief they'll like it.) Women (and men) may not believe all those nice guys sitting around them could be rapists.
So, the speaker just gave everyone the heads up - to the men to think about what they do and whether they have the enthusiastic consent of the other person before proceeding and to the women, not to be lulled into a false sense of security because they're with a "naice" guy.
Surely, informing young women (and men) of the risks of sexual assault is more important than avoiding some men getting huffy at the suggestion that they or someone like them just might be capable of sexual assault. People recover easily from getting noses out of joint. They don't recover easily from rape.
And for those who think this isn't a big issue, have a peek at this article about the culture of sexism at universities and how many social activities are set up so that women are particularly vulnerable to sexual assault.
I think others have covered this, but as the law currently stands in the UK - one must have a penis to carry out a rape, so only men can rape. Either men or women can be convicted of sexual assault, however.