I'm confused. Elon Musk says he is autistic (actually he says he has aspergers, which has been eliminated with DSM 5 and replaced with autism) , is there any evidence a high functioning autistic person like him "express and demonstrate challenges with understanding sarcasm, irony, nonverbal cues, idioms, figures of speech, etc".

This definition- of someone failing to understand idioms or figures of speech, sounds more like Lieutenant Commander Data on Star Trek than the meme twitter billionaire.

Is the definition of autism so broad as to have little practical meaning?