I would be guided by my child.
With my AS son, I know the answer: NO. While there are aspects of himself that he would happily "cure," he has no desire to loose his gifts. We actually had this discussion, one day when he was having a really difficult time, and I noted there were a few things we could try, to see if they helped, like a GFCF diet (open to it, but didn't have the discpline to eat that way) or medication (absolutely not). If he can stay who he is and now be able to write without pain, he'll take it. But if being able to write without pain means his mind is no longer full of out there ideas, he won't.
If I had a child who couldn't learn to communicate by any means, it would be a much harder question. You want your kids to be able to make decisions for themselves. What do you do if you have a child that you know can never do that, but with a proven and tested treatment might be able to? It's this group that drives all the cure talk, and I can understand why. If they were just mute, that would be one thing, but some kids are really locked away in their own worlds. What choice do you make then?
Everything in the middle ... wait until the child is old enough to be involved in the decision. I don't believe in absolutes, and I don't impose them on my kids.
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Mom to an amazing young adult AS son, plus an also amazing non-AS daughter. Most likely part of the "Broader Autism Phenotype" (some traits).