I look forward to reading the next generation's history books.
I know stuff like this wasn't blatantly going on in my (fairly affluent) school - everyone knew when a big party occurred. Weed? Absolutely everywhere. Small parties where some sex might have occurred? Sure. Sex within relationships? Yes. Massive 100 person orgies? Nope.
I will lend some credence to the article, based upon a creepy encounter I had at a supermarket. A girl (and her friends) insisted multiple times that we had "hooked up" at a party, and then never spoken. I suppose I resembled this paramour.
I can't stress how odd it is to be accosted by an under-age girl insisting she had sex with you. It was probably the single most awkward experience in my life.
She then said that I must have been drinking, and as such must have forgotten! (I don't drink as a matter of fact - I like my liver just fine, and it's likely I'd have addictive tendencies).
Thankfully, I was able to convince her without involving security or anyone else. It was eye-opening, because of how upset the girl was, and how she believed that the fact I was in college and she was under-age wouldn't be a deterrent for a fling - like I wouldn't practice due diligence before risking jail-time and the sex-offender list.
Still, I think this behavior is localized to certain subcultures, is exaggerated, and is geographically and socioeconomically centralized (notably, the article only mentions LA and NY).
This is blowing things far out of proportion. It's like watching Mean Girls and then assuming all of high school is like that for every single student.