I'd leave these questions to the biomedical community, as they have the ability to deal with nuanced questions like this. Given the amount of different behavior covered by autism, it doesn't seem useful to use that as an example.

I think if there was a test for Down's syndrome and a gene therapy cure, that would almost certainly be deployed, and advocates for people with Down's aren't going to have a big problem with that. People learned from the autism speaks debacle.