The real crux to answering that is this: Do we view autism only as a clinical diagnosis based solely on behavior and outward function, or do we talk about it as a neurobiological construct and identification, with an understanding of the context of the hidden disability and the hard work that those outward behaviors require?
Some scientists say that this is simply a function of more awareness, better diagnosis and a broadening of the definition of what constitutes the disorder.
The crux of that comment seems to be related to function and that certain functions like verbal communication capacities or having an administrative assistant preclude an autism diagnosis.