It’s weird the parents that are complicit in this, like how do they justify it in their mind? I had a girlfriend in high school whose mom encouraged her to post risque photos online in 8th grade, taking photos of her with her thong out posing seductively etc, she wanted her daughter to be hot. Maybe the parents are trying to relive their youth vicariously.
But you are right, worse than the random parents encouraging this, the platforms knowingly encourage this sexualization of children because they know the ad revenue it can generate.