I have never been comfortable with the autism fundraising either, not just because of the lack of adult support, but also because a lot of it goes toward organizational costs, salaries, and more fundraising. Also, although they are always claiming to be making progress, where are the adult success stories?
The way in which services are cut off for adults with severe learning issues, autism, etc. is ridiculous. I have Asperger's Syndome, and my three biological children all have some autism-spectrum traits. My eldest son has severe Asperger's. He teaches English in China, he is unemployable here despite having excellent foreign language skills (Russian major) because of his poor social skills.
My youngest child has a severe expressive and receptive speech disorder and a low IQ, but because he tests above his level, he would not qualify for special education. What happens to adults who have trouble functioning in society, especially in today's job market?