I do not subscribe to Ms McCarthy's views about autism causes and treatments but I try to keep an open mind and science is not, despite the views of neurodiversity bloggers to the contrary, a process by which possibilities are closed forever. New evidence, new studies may well support her anecdotal evidence about autism cause and treatment.
I do admire Ms McCarthy for speaking out about her son's condition and her efforts to help him. She must have known that as a beautiful actress she would be subjected to scorn and ridicule in some corners for presuming to enter the public debate on issues that affect her son so profoundly. But she did it anyway and encouraged many other parents in doing so. And she probably brought more attention to autism disorders and autism issues than the entirety of the Autism Hub's neurodiversity bloggers will ever do in their lifetimes.