“It’s not that Americans are less concerned with relationships overall. We’re social creatures outside work, yet the office interaction norm tends to be polite but impersonal. Some people think pleasantries have no place in professional meetings.”

Is this what mean the "keep it professional" clauses in the open source communities code of conducts? Not to "be civil and don't say things you wouldn't say in a face-to-face conversation", but "be impersonal"?