What is Huxley's satirical purpose in Brave New World? How does he accomplish it, and what is the reader's response?

Huxley is satirizing several trends in early twentieth-century society—trends that are still with us today. First, he is satirizing conditioning people so that they can be controlled. In Brave New World this is done by the state. Humans are subjected to nighttime conditioning from an early age—in some cases, this includes loud noises and electric shocks—so that they will be happy in the place in society to which they have been assigned. This parallels conditioning in our own society, for example, how incessant advertising conditions us to consume.
Second, the novel satirizes the ease with which people can be seduced into giving up their freedom in return for consumer goods and pleasure. The people in the World State are conditioned to endless consumption as well as endless sociality and to mindless pleasures, like the orgies that substitute for religion—they are a different form of "communion."
All of this distracts the masses from the fact that their lives are utterly conditioned and controlled. They are dehumanized by being discouraged from any independent thought, any time alone (which is seen as socially deviant), any deep relationships, and any interaction with great art or literature or even with real science. People in this world seem happy to trade in all the highest and most deeply satisfying aspects of life for security and avoidance of suffering. Mond notes that after the Nine Years' War, people craved security far more than freedom.
Huxley achieves a picture of this society by portraying a world of mindless people popping soma every time they are upset and spending their time at inane pornographic "feelies." He portrays it through Lenina's complete inability to understand John the Savage and through showing us glimpses of all parts of this society from birth to death. He also portrays it through conversations Mond has with people like John the Savage.
Our response is expected to be laughter—the novel is at moments actually funny—but also to be disgust. Huxley expects us to reject living in such an inane and unfree society and to examine how our own culture may also be infantilizing us through consumer goods and vacuous entertainment—perhaps much like social media.