I think of it as society being bad at managing our large numbers. I'd argue it's pretty easy to imagine how autistic people would be relatively well cared for and often well valued in tribal units, where all the other like 50 people in your tribe know you and exactly how you are and what you're good at and what you're not.

In modern society, we're all faceless numbers, so anyone nonconforming is not only extra legwork for capitalist overlords, but people don't know them and so struggle with how to act with or how to think of them. It's an issue of understanding individuality among millions that I think we've still not overcome in any good way.