in terms of behavior of famous people, while i understand that everyone has free will or whatever, you have to consider that these kids are raised in environments that encourage this sort of behavior, and are bombarded with media's ideas about body image/self-respect/behavior image so close to where they sleep (and without the safety of a glass screen to protect them from said ideas) that 'degrading yourself' is expected and 'the plan'

im pretty sure britney or miley never had self-respect classes as 16 year olds
or classes on women's issues, or black history
media ethics
it'd be hard to fit that in between the bare-minimum math and english alongside all the dance prep they needed before their next live show

and since you want to impress your record label daddies you just spiral

i think you're not wrong in saying that there are bigger societal problems on display here, but im not sure that trying to trim the leaves will help. we really need to figure out why the roots are causing the branches to be as frail as they are.