It means if the arresting officer or prosecutor thinks you have CP, you will be charged with CP possession and perpwalked into the courtroom as a likely child molester in the eyes of the public. It will take an expensive trial to exonerate you if all you have is a Japanese erotic manga involving 100-year-old vampires who look six. But in the eyes of the public, accusation is guilt when it comes to serious sex crimes. So, good luck finding a job.
But, in this case, you have to remember that the FBI is perhaps one of the world's largest possessors and distributors of CP. For purposes of law enforcement, of course. And they have a way of "discovering" CP on the hard drives of espionage suspects at risk of exposing how the national-security sausage gets made...
They could certainly bring the charges. It'd probably get tossed by a court. Whether it's the first court or the supreme court is the million dollar question.
It would get tossed immediately. That's like saying that because someone developed the internet, they're responsible for making it easier to distribute CP. Also it's like saying because you are a gun manufacturer, you're responsible for murder deaths with firearms. Or a rope manufacturer is responsible for suicides.
Why? How is an ML model different from an encrypted or encoded or phitoshoppes CP image? It comes down to whether the jurists decide that your data was built from CP content.
While personally I do find it a tad creepy, I'd 100% rather pervs draw it than actually exploit children. It's a solution that too many right wing morons would never be satisfied with.
For example: There was one guy that the jury was going to convict him for possession of CP, because he had videos of an adult actress that was asian and had small breasts, and so people believed her to be a child...
The only reason he was not convicted, is that when internet found out about it, they got in touch with the actress, that then personally went to the guy trial, and personally handed to the judge her ID and her studio documents, to prove she was adult when she made the movies.
EDIT: if someone remembers the name of the actress in question, please post it, I can't remember it and for some reason I am not finding it either... Juts so people know I am not inventing things.