Sure, but the point is that the thing that is ‘severe’ isn’t ‘autism’. An autistic person can be severely disabled, but the disability is itself a trait they only some autistic people have, so it doesn’t make sense to call the disability ‘autism’.
That doesn't seem like a useful place to draw the distinction. If someone has more autistic traits, they can be considered to be more autistic but not necessarily more disabled.
well you can have a benign tumor or one that is killing you, by that theory we should say the one that is killing you shouldn't really be called a tumor.
I think you are showing bias, there is nothing in that comment to suggest the point of the comment is calling autism a disease. I see it as juxtaposing the same condition to different outcomes.