Yes!! Thank you! If everyone were autistic, then our society would be structured around it. People would understand sensory overload, direct communication, dislike of hierarchies, lack of conformity, disappearing for days/weeks/months, need for order, etc. Society would be built considering all that into it, so it would just not even really be a thing.

Kind of like there could be an alien species that looks exactly like us and enjoys stimulation while sleeping, so they think that humans are disordered because we have difficulty sleeping on beds that shake like an earthquake all night. "Op, yep. Those humans and their sensory sensitivity while sleeping. They're disordered and need accommodations."

Since the majority of society doesn't have autistic nervous systems, the assumption is that deviations are disordered and allistics are not. That's what I'm getting at. Surely, there would be individuals that need more support than others, but support would probably be woven into the fabric of society, just like there are some individuals that suck at defending themselves from violence, so society created systems to protect those more vulnerable.