I view my Autism as something that is very beautiful. I am also mute. Like many autistics, I spoke as a child, then stopped when I could no longer stand the unbelievable anxiety and sensation of self-disintegration that came with the effort of talking. Autistic muteness is not due to mechanical inability to produce words and sounds. It is rather an emotional and cognitive issue.
Language has a different usage for an autistic person than it has for a non-autistic person.
It is more receptive than expressive generally. I take what is said by others very literally. My brain is incapable of understanding grey, subtle areas in language. The private definitions aren't totally incorrect, they are more surreal than the dictionary's explanations, and they are more concrete. I write fast with neat, tiny letters, or I type to communicate.