These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
False Dichotomy: Mustapha Mond's example of experiment on equality fails to be argument against free will, because experiment was engineered to fail, out of malice or out stupidity. People involved in experiment were Alphas. They not only had high intelligence that made them efficient at intellectual work. They were conditioned all their prior life, to be happy with, and only with specific, intellectual jobs. This ensured civil war, because they not only had more potential than to do menial tasks like farming, they were literally brainwashed into being incapable at accepting them. Yet no character points this out. If experiment involved members of all castes, except the caste system was not enforced there (allowing castes to interbreed, and take different jobs, if the wanted to), or citizens selected for experiment were adults who as children were spared conditioning, the experiment would probably succeed. Because the conditions would not be much different from current advanced civilization, where people differ in skills and tastes, but are free to pursue them. The experiment would confirm the world we currently live in is possible. Thus the presented dilemma between pointless hedonism, civil war, and low-technology reservations, is a false one.
The viewpoint of the Freud Was Right perspective is scarily accurate considering today's viewpoint. Look no further than the Freud Was Right page and realize we had to make that page a YMMV page when it was originally considered a standard trope. Even look at the All Psychology Is Freudian page.
Hilarious in Hindsight: The worship of Henry Ford looks even sillier given the direction of his namesake company and the U.S. car industry as a whole.
Squick: In the casually promiscuous society in which the book takes place, it is considered healthy - even endearing - for young children to sexually experiment with each other. There is also a memorable passage pointing out the more Freudian aspects of breastfeeding, and the descriptions of John's mother.
If you want further proof, just look at this◊ (illustrated version of part of the introduction to Amusing Ourselves To Death by Neil Postman, which can be read here in full).
The Woobie: Poor, poor John "The Savage". As if growing up bullied and ostracized by everyone was bad enough, he ends up despising the very world he thought would be his one salvation. And after being ostracized there too and paraded around like a circus animal, he chooses exile. After the curiosity seekers chase him even there, and after betraying his beliefs in a drug-induced stupor, he is finally Driven to Suicide.