It's true that the 'Ivy League' graduates many smart individuals, but does the Ivy League actually make them smart. It's the inverse of "garbage in garbage out". A top graduate at an Ivy league school would be just as smart if they went to a small state school. The difference, and where most rankings come from are the connections. Graduates from any Ivy League school generally receive the best job offers (most money) even though there are a thousand other graduates that are just as smart, but didn't go to a name brand school. The Ivy League can only admit so many students.
I graduated from a small public university, but that doesn't mean I wasn't challenged during school. I worked extremely hard both in the classroom and at my jobs. The author of this article doesn't have a problem communicating with 'the working class', the author chooses to have a problem.