I am sorry to hear of that, I seem to remember now we have discussed about this in the past on the old forum (I still can't remember its name!). My main problem with that sentiment, and not from you nor your reasons clearly, is that it is always used as a pejorative.
As someone who probably has it myself (never been diagnosed but I match all the descriptions to the letter), and who does have family members and friends who do have it, that kind of thing hurts me a lot. Now, if they do cause autism, I would sooner be the way I am and have them the way they all are then leave their lives and people around them defenceless against some of the most awful diseases going. I appreciate though from what you say it isn't quite so black and white.