I wonder if part of it is the culture today? And maybe his age had to do with it too....I think lots of autism diagnosis is done at around 3 years old.
Autism is a pretty big "buzz word" diagnosis there these days and the incidence of diagnosis somewhere on the autism spectrum is through the roof. Not that it's being over or mis-diagnosed...I don't even play a doctor on TV so I can't comment there, but I thought it was funny that faced with a very-much-outside-the-norm three year old, those are the questions she would ask and that is the causation she would first want to rule out.