Wow! Finally, this theory is being discussed here! 
But the only thing is that it doesn’t work out with a few scribes. Moreover, I think these scribes were also artists in their respective fields. In other words, either one crazy person hired the scribes, or they’re all crazy…
The nuance of this theory also lies in what we mean by the concept of a madman. How crazy was he? How did this manifest itself? As I recall, the first researchers on this topic wrote that VMS could have been written under the influence of something like “voices in the head,” but I don’t think that voices in the head alone bothered people in the Middle Ages. It could be some kind of graphomania, a form of epilepsy, problems with learning or perception (e.g., the astrological section. It’s quite possible that this is simply reference material, copied by the author in a way similar to “from a textbook into a notebook,” but “from another manuscript into one’s own manuscript.” Look at f68v3 and f67r2).
It would be nice if you could demonstrate a few examples of such art that you find interesting. Personally, I know very little about this kind of thing.
But for now, in the form of an assumption (i.e., if we don’t go into too much detail), it can explain everything. And it’s quite unconventional...
But the only thing is that it doesn’t work out with a few scribes. Moreover, I think these scribes were also artists in their respective fields. In other words, either one crazy person hired the scribes, or they’re all crazy…
The nuance of this theory also lies in what we mean by the concept of a madman. How crazy was he? How did this manifest itself? As I recall, the first researchers on this topic wrote that VMS could have been written under the influence of something like “voices in the head,” but I don’t think that voices in the head alone bothered people in the Middle Ages. It could be some kind of graphomania, a form of epilepsy, problems with learning or perception (e.g., the astrological section. It’s quite possible that this is simply reference material, copied by the author in a way similar to “from a textbook into a notebook,” but “from another manuscript into one’s own manuscript.” Look at f68v3 and f67r2).
It would be nice if you could demonstrate a few examples of such art that you find interesting. Personally, I know very little about this kind of thing.
But for now, in the form of an assumption (i.e., if we don’t go into too much detail), it can explain everything. And it’s quite unconventional...