I worked with two Harvard grads. I would never hire one. Over inflated opinion of themselves and expectation of compensation that is not in line with the position they are doing. Not big on details, big picture types.
Yeah I agree 100% Had one Harvard lawyer try and negotiate technical details of a networking contract on behalf of a customer. Lawyer didn’t know squat, you could tell that he was only spouting off about the latest buzz words that he read about last night. Thought his crap didn’t stink. After I showed that he didn’t know what he was talking about .... twice. Both times very publicly. I was not invited back to the negotiation table.
I have a friend who runs a division at an engineering / mechanical / aerospace firm. Decent size - about 5000 employees.
They will never hire a graduate from an Ivy League or top school. Same reasons you mentioned, but also: difficult to retain, they resent what they might consider "drudge" work or unsexy projects, especially as a new hire, and resist being formed to the culture of the company.
His view is - let 'em go fight for jobs at Google and Amazon.