Earlier quoted context omitted.
I am not concerned with how I perceive mentally ill people. Mental illness touches different facets of my family in different ways. I am quite familiar with it, it’s challenges and it’s stigmas. I don’t look down on mentally ill people, because I love and am friends with many people who suffer from mental illness. My objections are due to the societal biases that others hold against mentally ill people. My problem wi…
Its not factually incorrect whatsoever, you just don't like it. Autism is a mental disorder, no question about it--you even made the point by calling it a "cognitive disabilty." Cognitive meaning "relating to, being, or involving intellectual activity" and disability being obvious. Calling something a synonym of itself and arguing that its a completely different thing is pretty obtuse.
Also, "disorder" is a more neutral word than "illness". Strictly speaking, it just means something is abnormal, not necessarily dysfunctional.