Original sentence: The stigma may be illustrated by the response from a science fiction fan to one of the theories advanced here, who argued against "diagnosing" a group of people as "mentally impaired" simply because of their choice of literature genre, elsewhere calling it an "offensive stereotype".There is a controversial theory within science fiction fandom arguing that many of the distinctive traits of that subculture may be explained by the speculation that a significant portion thereof has Asperger syndrome.Unfortunately, societal acceptance of these traits is far from general, as many people in the autistic spectrum will confirm
Edited sentence: There is a controversial theory within science fiction fandom arguing that many of the distinctive traits of that subculture may be explained by the speculation that a significant portion thereof has Asperger syndrome; on the other hand, it has also been considered that describing a group of people as mentally impaired simply because of their choice of literature genre may be an example of cultural bigotry rather than a proper form of diagnosis