Autistics dislike, and lack proficiency in, small talk.
However, small talk is considered a social skill in the neuro-typical, mainstream world.
“Small talk is an informal type of discourse that does not cover any functional topics of conversation or any transactions that need to be addressed.” (wiki)
It’s also called Phatic communication…
“In linguistics, a phatic expression /ˈfætɪk/ is communication which serves a social function, such as social pleasantries that don’t seek or offer information of intrinsic value but can signal willingness to observe conventional local expectations for politeness…”small talk” (conversation for its own sake)…
In phatic expressions, speech acts are not communicative, since no content is communicated… apparently “purposeless” speech acts—polite small talk, like “how are you?” or “have a nice day”—even though their content may be trivial or irrelevant to the situation, perform the important function of establishing, maintaining, and managing bonds of sociality between participants.” (wiki)
It begs the question… Where is the deficit?
Is it with autistics, who love valuable information, with purposeful and relevant content…who follow their curiosity instead of social convention?
“Have a nice day”