> But at the same time, the people that are doing fine with autistic traits are no less autistic.

I’d question that statement. People with BAP (broad autism phenotype) have autistic traits and are doing fine with them, but by definition are “less autistic” than people with ASD. A lot of people with other psychiatric disorders such as schizophrenia, can have significant autistic traits as symptoms of that other disorder (the symptomatic overlap between ASD and schizophrenia is much larger than many people appreciate, although it is believed that the similar symptoms nonetheless are caused by rather different processes) and obviously are not “doing fine”, but nonetheless are in a very real sense “less autistic” than a person with an actual ASD diagnosis

> (Also, Asperger's has ceased existing a while ago)

That’s not really true; the DSM-IV still exists, and professionals are still free to use it if they wish. Our son’s psychiatrist told me that he still sometimes gives children DSM-IV Asperger’s diagnoses if the parents feel particularly uncomfortable with the label of “autism” inherent in DSM-5 ASD.