[AvivaSimplex]

I call shenanigans on the whole thing. First, "insane" is a legal term, not a psychiatric one. Lawyers might argue over whether someone was insane when he committed a murder, but a psych professor would never describe someone as insane.

Second, the description of the mental disorder is very un-psychiatric. "He was constantly seeing his own fantasies all around him. He also had a certain phobia (undisclosed)." The first sentence suggests schizophrenia, though that is characterized much more by auditory hallucinations than visual. A phobia would have to be extremely severe if it manifested itself in the way the artist adapted a picture. Someone who's afraid of flying would generally be able to copy a picture of a plane.

We'll have to see what the answer is, but this just seems very, very unlikely to be true.