Society may produce un-traumatized autistic people.
They just can't get diagnosed. Because an autism diagnosis requires problems: Difficulty with communications, with managing emotions, with physical behavior constraints.
An autistic child raised by compassionate parents who don't mind that their kid won't meet their eyes to talk, who don't get upset at hand-twitches, who avoid clothes that the kid doesn't like, who help the kid understand their own emotions and how to recognize the emotions in the people around them ("see how his forehead is crinkled? That means he may be upset, or he may just be thinking hard, but either way, he's probably not happy")... may not have noticed that the kid is autistic.
There's a reason a lot of autism isn't recognized until school - because parents that just pay attention to their kids and adapt their communication to what the kid needs, may not set off any of the "problem indicators." And a compassionate school may manage to bypass them as well, especially for girls, who are less likely to have the "fidget" behaviors, and for whom "speak softly while not making eye contact" isn't usually considered a red flag.
According to the DSM-5, autism is characterized by:
difficulty communicating and interacting with others
repetitive behaviors and a narrow set of interests
symptoms that affect quality of life and functioning in areas like work and school
...if the person's symptoms don't "affect quality of life and functioning," they don't get diagnosed. If their surrounding community is supportive, they may not have "difficulty communicating and interacting" - just a different style than most of the people around them. And their interests may be seen as "well, that's what they're interested in; it's cool that they have a hobby."
Autism is only officially labeled when it causes problems for neurotypicals in the autistic person's community.
Non-traumatized autistic people are just "a bit odd," and the medical industry doesn't recognize them.
