Focusing on Linda and Lenina, I would argue that the "control methods" described are very effective.
Both Linda and Lenina are betas, the next caste down from alphas. Both have been indoctrinated from earliest youth to feel anxious when alone, to believe that mothers, fathers, and families are dirty and neurotic elements of the past, to rely on soma to get over rough emotional patches, and to be sexually promiscuous based on the idea that "everyone belongs to everyone else." Both have been taught to consider their society ideal, as well as superior to other cultures.
Linda is horrified when she finds herself pregnant and abandoned on the Savage Reservation. As she says when she first meets Lenina there:
I was so ashamed. Just think of it: me, a Beta—having a baby
Linda has kept all her clothes from the old days, and indoctrinated her son John in the superiority of her old culture. She maintains her promiscuous behavior on the reservation, becoming a social outcast beaten by the other women, who regard her as a whore. Her early brainwashing takes hold over her mind, and she finds it impossible to assimilate to her new culture, which she considers far inferior to what she left behind. When she returns to the World State, she stays in a soma induced semi-coma most of the time—and never questions whether this is a good idea.
Lenina is also successfully brainwashed by her culture, so much so that she "shudder[s]" when she imagines having a baby as Linda did. She is repelled by Linda's aging and ugliness, and is disgusted by what she perceives as the dirt and disorder of the native culture. While she is attracted to John, she finds it impossible to imagine he could see love and sex from a different point of view than her. After he lashes out at her as a whore when she unzips her one piece suit, she cannot understand why he is upset as she is doing what she was programmed to think of as healthy and normal behavior.
Alphas, being of high intelligence, are the caste most prone to have troubles adapting to the social order. The less intelligent betas are easier to brainwash and control.