I personally think "categories" of autism are unhelpful. The emphasis needs to be focused on the individual and the impact that their neurodevelopmental disorder has on them. Not what artificial category they fit in.
I support the move towards having a single clinical diagnosis of autism (or ASD or ASC whichever). Beyond that, all further description should relate specifically to the individual.
Learning difficulties may coexist with autism as can any other condition / disability / social or family circumstance.
Using categories or labels, like Asperger's or high / low functioning, leads to generalisations and assumptions which are at best unhelpful and at worst dangerous.
"High functioning" is not a diagnostic category any way. It has no clinical definition. Some people use it to mean IQ and others use it to refer to functioning in daily life.
As I said before, I understand why so many parents of children with learning difficulties / severe and complex needs / PMLD feel angry about the the rose tinted view of autsim created by the press / dramas/ blogs etc.
But it has a devastating impact on people like my DD too! People who on the surface look like they should be one of those successful, high functioning 'different not disabled' autistics.
The mismatch between people's expectations and the reality of what my DD can do, has almost destroyed her. And the fight to even get her needs recognised as a disability is relentless and soul destroying.
There are many, many people who have a diagnosis of Asperger's for whom that could be regarded as a disservice because their autism profoundly impacts their lives, but too many people expect them to be Sheldon.
I agree that there needs to be a much more realistic representation of the impact of autism in media and for professionals. But I don't want to see more divsions and categories. The adage “If you’ve met one person with autism, you’ve met one person with autism,” may be trite - but it is actually true - the focus should be on the individual.