OP, I am very sad to say that society ISN'T interested in engaging older autistics. They want us to either have blended in, or shut up and go away. Just look what happens when autistic teenagers try to advocate for themselves-- it's tolerated if they want to write inspiring, Hallmark-y essays for the local paper. It's ruled and regulated away if they try to do it in a board meeting or any place else that might be of consequence.
Autistic CHILDREN-- and preferably severely classically autistic children-- are another matter. They're controllable (or at least, it's easy to put words into their mouths). They're pitiable. They're, dare I say, SAFE. Non-threatening.
The same profoundly affected individual in an adult-sized package?? Or a different individual armed with ideas and opinions of their own, and the ability to articulate them?? WELL. That's another matter, isn't it??
Bloody depressing. They've made the mistake of trying to marginalize a group that could speak for itself before.
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"Alas, our dried voices when we whisper together are quiet and meaningless, as wind in dry grass, or rats' feet over broken glass in our dry cellar." --TS Eliot, "The Hollow Men"