Being in a wheelchair is rarely going to be caused by a disorder, also autism is different insofar that the negatives and positives seem to be linked to eachother and are not merely a matter of random circumstance.
But practically, the disorder definition above basically would lump the above poster in with somebody who was struggling to hold down a part time job or any social relationships as having the same level of disability. All therapies, treatments, accomidations, etc will end up calibrated for the more profoundly disabled person while being offered to the above poster. Generally, peoples first impression of the person will understandably be based on that of the average person with autism spectrum disorder if they're told they're autistic which will cause them to be pretty profoundly misunderstood.
Your lack of knowledge about the range of treatment options and support available for autism/asperges does not make it true that all therapies, treatments, etc are the same. Your "take" seems to be very strongly held based on what appears to be a very limited set of anecdotal data points.
