I think autism as a gift might relate to autism itself but not the behaviour that you are talking about. A lot of autistic children demonstrate pretty challenging behaviour but then they are trying to deal with a pretty intense situation inside their heads and it is most likely that which is making them angry or distressed.

To generalise is crazy and using the work autism is similar to using the word childhood, no 2 children are the same... nor are any 2 autistic people.

In an individual who has been helped to deal with the difficulty of linking outside reality to inside reality then you may indeed have something wonderful. Hard work though!!