Agreed. Unless you have significant ownership stakes in the company, killing yourself with overtime is never rewarded. It just becomes the normal, and when you finally do cut back, everyone seems disappointed.
While I don't doubt the rest of the article, I will say as a former Uber intern (this past summer) the vast majority of us were not overworked. I (and most of my fellow Uber interns) worked between 40-50 hours a week, and we were paid hourly (with overtime being paid at 1.5x base pay).