I notice a sort of cognitive dissonance with them though. It's undeniable that technology is powerful and many of the richest people in the world got there through tech. I don't think "old money" has quite digested what that means to them and it generally causes discomfort.
I don't think that it's about the difficulty of math/computers/science; it's about the goal of the degree. A liberal arts degree is not a vocational credential: it means that one has been taught to think (literally, the 'liberal arts' are those studies useful to a free man, not an employee). If you have a math or chemistry degree, that can still be upper-class so long as you're not intending to make your money in math or chemistry; it's when you had to study a subject so that you can afford to live that you mark yourself as not upper class.
I have certainly heard that having one set of grandparents from the working class Gran started in service and Granddad was a coalminer then a buss driver.
https://news.ycombinator.com/item?id=16272553
"Chavs: The Demonization of the Working Class"
"There’s been class warfare for the last 20 years, and my class has won"