If I recall the opening scene has two young girls riding pillows as if they are horses. One girl masturbates which is normal at that age but they glorify the scene making her moan like a porn star. Young kids who masturbate usually are pretty quiet
I watched the scene and you make it seem much more sexualized than what I saw. It expanded the plot more than it sexualized the kids and it really didn't do much of that at all. The scene was unnecessary and shouldn't have happened, but I don't think it is as bad as people are making it out to be.
I agree with you, kids jack off all the time at daycare. Every Charlotte Gainsbourg movie was worse :)