On moral grounds I am opposed, I do see people with autism as "different" not "inferior".
If we "ban" autism, we have good odds in ending with a society that will define what is normal and "abort" everthing else. Will every child be blond and blue eyed or something?
Do any of you know the movie Gattaca? It is about a future where most children are genetically planned (to have low odds for cancer etc.), and the ones who arent are heavily discriminated against. The main actor is an "unplanned" person that assumes a fake identity to reach his goals.