Very over long as American articles a tend to be. Conversely you could argue British journalism tends to be too dumbed down and brief.
However, I think it has a strong grain of truth, for all the talk of the American dream and hard work equalling success they have just as much of a class system as we do.
I've read something else about incredibly expensive society charity balls possibly in Boston and they were pretty much like our debutant balls.
Their political and social elite is just as tight knit and protects it's own as ours and I strongly suspect more conservative. In the states I'd be a democrat, here I'm a left wing Tory. In many respects socially and religiously the USA is still in the 1950's at best.
If you have an elite defined by money and education, a elite founded on business success not simply birth (although clearly being the child of parents already in the elite helps). It's going to value the things business, banking and corporate law value. It's not going to produce many eccentrics.
Sadly I see the same happening here, the treadmill of A* at GCSE, AS and A level followed by studying at universities with too many pupils for any individual attention, is not a recipe for turning out rounded individuals.
Nor is the pressure to do extra curricular activities and works experience from 5-21 that's all worthy and valuable on your CV not things you enjoy and make you a rounded individual. Doing an internship in a solicitors may look good on your CV, but working in MacD's might make you a better person.