The author's not at Princeton, so why is he even offering an opinion? This is a bunch of made up BS anyway. Princeton faculty aren't going to be okay with dozen

The author's not at Princeton, so why is he even offering an opinion? This is a bunch of made up BS anyway. Princeton faculty aren't going to be okay with dozens of extra students attending their lectures (there are room capacity constraints). They're sure as heck not going to grade essays, hold office hours, and answer email inquiries from a few dozen random individuals that decided to stroll into the class. He's basically saying there's no need to buy food because you can eat free samples at the grocery store. He also just happens to be the author of a "contrarian" book arguing that college is worthless. It's purely a coincidence that he's posting misinformation on the same topic - making claims about a university where he doesn't work - in one of the most widely read news outlets.