To make "distribution of child pronography" even more weird... SCOTUS ruled* that children photographed not engaged in lewd acts does not commit a crime. In o

To make "distribution of child pronography" even more weird... SCOTUS ruled* that children photographed not engaged in lewd acts does not commit a crime. In other words: Children nudists are legal to photograph. Kids in bathtub are legal to photograph. A 13 year old "seductively" sucking on a banana, fully clothed, is illegal. ? A guy fapping to pictures of legal children nudists makes those pictures illegal? So... What rules would be appropriate for the spirit of the law?