I noticed this years ago. Over the years they’ve changed the definition of Autism so much it makes me believe theres no such thing as Autism. It’s a diagnosis which means they don’t know.
“On the spectrum” is as silly as ADHD, and CDO (that’s OCD with the letters in the right damn order).
When I was growing up in the 40’s and 50’s, for better or for worse the universal cure for “autism” symptoms was dad’s belt.