I think it all comes down to the following basic point:
The autism educational establishment doesn't really think our kids can learn much, so they don't value professionalism. Knowing the words to key nursery rhymes is all that's required.
I think I've told this story before, but when a pal and I were visiting one of this country's flagship autism schools, which is seen as leading edge and fabulous in all ways, we asked the Headteacher (who is also a leading light, and a "go to" person for government on autism) what qualificiations she required of her staff in the school?
She got a loving, faraway "ah bless" look in her eyes and said :
"All we ask is that they love the children!"
Now I'm all for staff loving my gorgeous boy, but I'd really quite like some teaching as well as fondness!