Language is important...

...and indicates understanding.

"Some people do different things or need different things from the average person. (Or the imaginary average person.) Other people have to decide how they feel about that difference.
...
However, usually a minority group's right to option one is supported or denied on the grounds of whether they can help being different or not. If you want someone to be responsible for your bad behavior toward them, you argue that they are being different on purpose.
...
Therefore you can kind of tell what side someone's on just by how they talk about someone who is different.

Medical and mainstream culture descriptions of autism are steeped in option two language. They are very superficial descriptions of things Autistic people do, with the implication that Autistic people do these things simply because they like them, or for no reason at all.

1. "Autistic people stim" not "Autistic people stim BECAUSE" or "Autistic people have motor/sensory stuff going on that causes them to move like this or be soothed by doing this."

2. "Autistic people avoid eye contact" not "It scares Autistic people to look at other people's eyes."

..."

And more examples/explanation on the blog post behavior vs. ability