My understanding is that someone officially on the Autism Spectrum might be able to fairly but unofficially also claim Asperger's Syndrome if they have one distinctive trait: no speech development delay. That is, Asperger's Syndrome looks like mild Autism Spectrum Disorder in someone who was not late developing early language skills.
In an adult it might be difficult to find out what their language skills were when they were very young. I suspect this might make Asperger's Syndrome more difficult to accurately diagnose in an adult, that might be a benefit of moving it under the Autism Spectrum Disorder diagnosis.
When I had my Adult Autism Assessment in 2019 (when I was 64) the Psychologist concentrated on Autism. However, even though I was 64 I was able to provide information from both of my parents about what I was like as a baby. (My father is still alive, and quite old, and I also had a copy of a journal my mother kept while I was a baby.) So the official psychological report says I meet the criteria for a diagnosis of Autism Spectrum Disorder, Level 1 (Mild) but also notes that I displayed many of the qualities of what was previously known as Asperger's Syndrome.
My impression is that, informally, some high functioning Autistics call themselves Aspies or say they have Asperger's Syndrome even if they did not (cannot!) officially get that diagnosis. They are self-diagnosing based upon the best information they have available.
I think officially, unofficially, even informally will be okay on Wrong Planet.
TwoThree notes:
(1) I don't know how good your English is but it has to be better than my German. I am a typical American who speaks only English. I will not object to you asking me to rephrase things to make it easier to understand.
(2) Please do not be bothered by the colors in this post. I am not doing it to annoy you, I am doing it to entertain me. I am an Aspie, I am old, I think computers are toys, and so I play with my Wrong Planet posts.
(3) Please remember I am not a psychologist! I worked with computers. I am telling you my opinions based upon what I have found on the Internet, including Wrong Planet. I might be completely WRONG!
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When diagnosed I bought champagne!
I finally knew why people were strange.