We have previously discussed the very significant limits of the current nosology as a research, or even as a clinical tool:
You really hit it though in your last post. Yes there are different approaches (albeit evidence is sparse) used if the individual has trauma with autistic characteristics or primary idiopathic autism, and both are present more often than is appreciated. Practically though? If there is a trauma history try the trauma focused therapy at least in conjunction with the autistic focused approach: symptoms caused by trauma may be remedied more often with trauma focused care and a person with autism who has trauma should still have it addressed.
But that is a very specific context with a straightforward answer in my mind: treat trauma history in any case. But the context of someone like @Moriarty ? What if an evaluation surprised him and labeled him as ASD? And?
The “superpower” bit is overstated but the concept of neurodiversity affirmation is powerful Many of the problems you want your son to avoid are not from the autism really: it is from the mismatch of him with the world. Your work has been to wonderfully get him into an environment that fits him better so he doesn’t experience only the negative aspects. His strengths are also part and parcel of his core.