The article is complete nonsense. With a few exceptions, the students flowing through these institutions are brilliant, accomplished, and talented BEFORE THEY GET THERE, and even more so after four years at the institutions. They mainly come from well-off families, and they have an irritating belief in their own superiority and entitlement. So what? Generally speaking, they are human.
At 21 or 22 years old, however, THEY DON"T HAVE ALL THE ANSWERS. Just like most other 21 and 22 year olds. What do you expect?
And lest we forget, "diversity" is nothing more than code language for colleges to be free to do some social engineering. There is no evidence ANYWHERE that "diversity" adds any measurable improvement to the quality of one's education.
What makes the Ivy League schools great is the competition for those seats in each freshman class. It's not the professors or the administrators or the ivy-covered buildings. They get so many applications from such a superior group of applicants that they could put them on a deserted island for four years without any professors at all and at the end of that time they would still be a superior group.
Of whom many people are quite jealous. To wit, this silly article.