Common themes represented here:
Fetishize female vulnerability. Women’s restrictive and painful clothing and shoes; women losing weight to take up as little space as possible. Tiny, starving women in restrictive clothing and high heels make easy targets for male violence.
Handmaidens of the patriarchy. Women narrators and actors selling patriarchal values to other women, in this case both consumerism and woman-hating through both dieting and clothes-hoarding.
Normalize abuse/neglect. Intentional starvation or near-starvation of “first-world” women who can afford to eat and have food available, but choose not to eat or deliberately fail to eat enough is the epitome of neglect, and self-neglect.
Pornify girl children/infantilize adult women. Take up as little space as possible by dieting, and then act cute and coquettish for the camera. I’m an adult but I love candy. Yay candy, give me more candy.
Reversal. Eating highly processed, non-nutritious food is good for you; losing is really gaining (“what will you gain when you lose?”); eating more will make you weigh less, without a satisfactory explanation/qualification of that implication or the very specific conditions under which that might be true for some people.