Those articles seem mostly about CBT used to reduce anxiety and obsessive-compulsive behavior at autistic children. Yes, that's an area where CBT is successful, and it's a great news that it works for autists too.

But to me it seems like it does not address the "essence" of autism (not that I know exactly what the essence of autism is), only fixes some symptoms. At the end, if everything succeeds, you will still have an autistic child; some of the problems will be fixed, some of them will remain. Yes, it's worth doing, just don't get your hopes too high.