Forgot to respond to your overall question:
I feel a little wierd about autism branded stuff , I don't feel like it should be something that everybody needs to know - especially if its not the child's choice at all about displaying it.
In terms of marketing autim-specific products: I see a growing plague of dodgy companies trying to cash in on the autism community in the name of "charity" for massively overpriced crap.
I dont think we need it at all
I very much agree with you about the dodgy companies. I once read about all the pink items that are sold for breast cancer awareness and how little actually makes it to any kind of research funding. It was disheartening.