Mild autism can give you a genius like Einstein. If you have severe autism, you could remain nonverbal. You don't want people to be on the severe end of the spectrum. But if you got rid of all the autism genetics, you wouldn't have science or art. All you would have is a bunch of social 'yak yaks.'

This quote is saying that people with mild autism can have a genius-level of intelligence, like Albert Einstein. People with severe autism may not be able to speak for themselves and may need extra care. Even though severe autism can be difficult, if we eliminated all of the genetics associated with autism, we wouldn’t have any great scientists or famous artists, just people who talk a lot without producing anything valuable.