The US has its Alphas and Betas and Gammas and Deltas, all of whom are targeted by advertising that convinces them that their caste is the best (and the other castes are living incorrectly). It's probably not as bad as the old UK system the book was satirising, but exists clearly enough once you look for it.
despite everyone being content with their caste and having lots of consequence free sex and activities fulfilling to their mental faculties
yeah I also found this world to be attractive