I liked your interpretation of Van Gogh's difficulties and great talent, Aspie with Attitude. His use of colour in his paintings is incredible and there are few artists who can compare to his use of colour.
Another thing you might keep in mind about Van Gogh is that he used mainly oil paint and watercolour. Oil paint in his era had quite a bit of lead in it, and artists were exposed to a great deal of it. Often they licked their brushes to point them, and took in small amounts of paint orally.
There was lead in most wallpaper glues and internal house paints as well. This, along with his other difficulties, may have been part of the reason he had bouts of anger and meltdowns. Lead poisoning exposure can cause many difficulties. So along with his lead exposure, his epilepsy and other health problems, it is possible that he was autistic.