For the same reason that we don’t use the concept of race between humans, because it’s a spectrum with no distinct delimitation point.
You will find people of all shades of colors, all types of hairs, etc. just like you will find autistic people with different sensitivities, different creativity, different interests, different needs, and you can fill the whole spectrum, you won’t get a gap between “autistic” and “asperger”.
For the same reason that we don’t use the concept of race between humans, because it’s a spectrum with no distinct delimitation point.
You will find people of all shades of colors, all types of hairs, etc. just like you will find autistic people with different sensitivities, different creativity, different interests, different needs, and you can fill the whole spectrum, you won’t get a gap between “autistic” and “asperger”.