“Pretty baby” and “Blue Lagoon” where undoubtedly prurient and should not have been made.
The issue isn’t about a theme revolving around child abuse, it is about sexualising the child actors in the film. “Pretty Baby” featured an underaged Brooke Shields fully nude in many scenes. That was totally unneccessary and prurient as well as exploitative and wrong. I’m not even sure how it got made and everyone involved didn’t get arrested to be honest.
As for ‘cuties’ for a film that ostensibly is a critique on the hypersexualisation, it does a lot of hypersexualisation of the child actors involved in making it. Its a bit like making a film criticising racism and then paying all the actors involved different rates according to their race.