Based on what I've read lately, my consensus perspective is that 80% of what people consider autism is actually just the western diet's effect on normal brain chemistry.
replies(4):
https://www.clinical-partners.co.uk/for-adults/autism-and-as...
"I prefer to do things on my own, rather than with others."
"I prefer doing things the same way - for instance my morning routine or trip to the supermarket"
"I find myself becoming strongly absorbed in something – even obsessional"
These are all questions everybody living in a modern society can relate to.
Of course autism is a real condition, but modern society somewhat requires people to be machine like and that can easily look like someone is on the spectrum.