Rousseau is the patron saint of Third Worldism
No kidding. The Rousseauian "Cult of the Primitive" has generated more human misery in the last 200 years of "civilization" than the previous 6000 years of barbarism. To wit: Rousseau begat the French Revolution, which begat Marx and Engels, which begat world communism, which begat over 100 million dead in the 20th century alone. The lure of "tribalism" is not some esoteric, academic malady -- it has serious, real world consequences.
BTW, the book mentioned in passing above, Paul Johnson's Intellectuals, is to be highly recommended!
I also agree completely, with your post.