This is why I don't drink. And any girl or boy who got drunk by being invited to have two more drinks than they should, should really have been more clever about it, because people are animals, and they'll resort to their basic instincts when they're at their worst and they think they can get away with it, and you should be guarded about that.
That said, at least in my country it is legally recognised that people can be made to act against their will without real physical violence. Simply having two tall guys next to a girl while cornered in a pub with loud music can get her to do things she does not want to do for fear and self-preservation, it has happened, and those people have been charged guilty of sexual harassment/abuse in court.
There is also things like smoking, or gambling. Nobody forces you to smoke, yet governments are legislating smoking more and more heavily every year to get rid of it because they recognise that even if you have the choice not to smoke, people are weak willed and it gets them killed.
Nobody forces you to walk into a gambling house and ruin your family's life savings, yet many governments are starting to legislate more heavily how many gambling houses can open business and what profit margins they can have so people stop potentially ruining their family's life savings.
Here is a fact that we as individuals tend to not want to recognise: Most people are gullible and malleable in one or another way, and generally weak-willed. This is why there is a radically huge difference between a good salesman and a mediocre one, and two people selling the same thing will have very different level of success, based on how good they are at embellishing and beguiling their "victim". It's why companies invest millions or billions in getting your favourite streamer to stream on their platform. It is an studied fact that a lot of people can be sold things they don't really want if it's the right person who is selling it. When it is a click of my mouse and some ads? Sure, who cares. I'll click your clickbait and mostly ignore the adds, and one minute later I'm back to my life as it was, without half a thought invested. When what is at stake is your moral and sexual integrity? Bigger problem here.
We all like to think of ourselves as the one person immune to all of that (I think that of myself, for sure), but if it works with a 10% of the people, then that's 700 million people in the world.
Putting things in perspective though, I don't want to think what happened was worth criminalising, unless proven otherwise. Guy meets girl, they get happy, guy sees the opportunity and slides a couple extra drinks, girl probably kinda liked the guy, and when the barriers are down, they have sex. Happens every day in every town, I don't think it's that big of a deal.
That said, the line "she was dressing so sexy, asking for it" is completely repulsive, and I hope that mindset is nuked out of orbit with the death of our generation. I can't believe in 2020 a girl still has to choose her looks based on how hard she wants to be seen as a sexual object. She can not choose her looks just because she wants to be happy with herself, or maybe because she's been starving for 6 months just so she can be proud of her physique and she definitely deserves to show off without being seen as nothing more than a frigging sexual object by drooling testosterone-dripping idiots.
Those people should go back to the Paleolithic.