I'm sorry you can't decode alien languages. I myself have been able to speak Predator fluently since I was born
Joke aside, I watched the Good Doctor TV show recently and read that some autistic people had reviewed it positively (it's about an autistic surgeon who's brilliant). The autistic character is rather cliché overall and sometimes does very stupid stuff that nobody who's been living on planet earth would do - so it is a character who's weird and doesn't understand much about life at all BUT is brilliant at surgery and also blurts out extremely wise comments here and there (the kind you sometimes see in movies, the "exceptional insight" from people who were supposed to be particularly dumb, or crazy, etc). And the people around patiently explain life to him, in the tone you'd use with a 3 year old.
So I guess the portrayal of the weirdo who is in fact a genius but as illiterate in life skills as a newborn also attracts viewers.