I don't care if she wrote the article or not. Or if she's publicity seeking. She's communicating something as articulately and movingly as she can (whether it involves using a ghost writer or not) that might bring about less hatred/ignorance of disability. Maybe that's not her aim but if that's a side product of the show, that's good enough for me.
FB is, sometimes, funny. On that occasion, he very definitely was not.
DS2's disability will, I'm sure, be the butt of some fucking hilarious jokes over the course of his life. In fact, some people have already felt it's OK to have a little quip at his expense. I'm not strong enough at the moment to challenge them, and know that if I started to, I'd lose it to the extreme and that's not something I want to show my children. One day though I will master myself and be able to do it in a dignified way. Maybe I'll get a ghost writer to help.