Is it possible for an autistic 6 year old to be able to program tv programs? I can't even do it.

Absolutely. I have found many autistic kids very prolific with computer technologies and encourage them and their parents to broaden these interests. They truly listen to a different drummer and we need to help them find their way.
Yes. Autism is not necessarily an intellectual disability. Iq scores can be misleading to their true innate intellectual potential.