Their points on saving is stupid, when most people live paycheck to paycheck, and the idea that social class isn't about being in X% but the values you have? What a load of crap, here's someone who's in the upper class, who has GREAT values, link: http://www.latimes.com/business/money/la-fi-mo-richest-woman.... Being in a certain economic class does not give you a certain set of ideal that others lack, nor does it negate you any insight. Everyone is different.
Also, the idea that we don't have peasants and lord anymore, really makes me confused, considering I have and know many landlords, and that most people who live in rural areas contribute to the same function as Peasants did (see Farmers). Just because things become more complex doesn't mean you can ignore the fact that their are still owners (lords) and workers (peasants), or that the same idea still isn't absurd (everyone can be rich!!!)...
This article contains sweeping generalizations and a gross amount of naivety.