Sorry to arrive very late and if this has already been shared, but hopefully useful enough to repeat if so:
Evidence is slowly starting to emerge that people on the autistic spectrum are actually hypersensitive to the feelings of others (as opposed to lacking in empathy):
This blog post by Nicole Nicholson discusses well the issues surrounding autism and empathy.
What are we to conclude? I think it is safe to say that we are sensitive and empathetic to the point of being overwhelmed by the emotions of others, and that we sometimes have trouble ?reading the signals? and maybe knowing how to respond. That is the inside. What?s outside is our reactions and behavior, from which the wrong conclusions have been drawn.
Whilst I have much sympathy with CH's son, "Autistic" was the wrong choice of insult if his intent was to describe CH as lacking in empathy.
Failure of the media to pick up on this highlights beautifully how widespread this general misunderstanding is.