Perhaps your thinking on this lacks grey areas. A healthy percentage of extremely successful people in computing are referred to as “on the spectrum” - are these people helped by having some of the aspects of autism or hindered by it? Why do we need to have a diagnosis for people to have aspects of this pathology?
I think the point was that the colloquial use of "on the spectrum" is incorrect, as is a majority of layperson derived psychiatrical diagnosing.