I do remember once while deplaning (I honestly forget which airline, but probably Delta) that some kind of nude scene was playing on the tv in the business class cabin, and visible to everyone passing by, including presumably children.

Again, I remember when I first started flying enough to sit in seats with personal IFE that most movies/shows were "edited for content" or something similar. At some point over the past several years, that went away, at least on Delta and American