Gilligan, no...
The upper middle class works their asses off in school and in their careers so they can have big houses and nice cars and their kids can go to private schools and have vacation homes and country club memberships and boats and expensive clothes, etc. They often have a high level of consumer debt and cannot stop working or they will not be able to pay the financial obligations they've incurred. They work their asses off to look wealthy.
Gilligan, I suggest you read the books before commenting on the philosophy of them.
The difference between the upper middle class and the wealthy is that wealthy people use assets to buy luxuries. They don't buy big houses or nice cars or any of the rest of the crap I listed above until they have way more passive income than they need to cover their living expenses. Even then they re-invest most of their passive income.