Director defends using children for sex scene on Netflix. You can read the entire article, but it's pretty clear that the director wanted two pre-teen girls to have some sort of sexual moment, so that's what he put in the film. A nine-year-old girl, masturbating.
And do not for a moment think that this director, and probably his pals, didn't all go home to screen that particular moment in the movie, with a bottle of lube in hand. Of course they did. That was the point of making that scene. In a movie about sex, basically this guy's pornographic dreams put to film, he included a NINE YEAR OLD GIRL.
This is Hollywood. They've been doing it for decades. They aren't going to change until they die. So let them die. Stop supporting the perverts.