From the article:
The period, meanwhile, has become the evil twin of the exclamation point. It’s now an optional mark that adds emphasis — but a nasty, dour sort of emphasis. “It is not necessary to use a period in a text message, so to make something explicit that is already implicit makes a point of it,” Geoffrey Nunberg, a linguist at the University of California at Berkeley, told the New York Times.
A few years ago, Ben Crair at the New Republic wrote a hilarious history of the period in age of instant messaging. “The period was always the humblest of punctuation marks,” he began. “Recently, however, it’s started getting angry.” Crair noticed that in his text conversations, the period had stopped serving any grammatical purpose. Instead, it was mostly being used to express a certain tone or emotion. And that emotion was anger.
A few years ago, Ben Crair at the New Republic wrote a hilarious history of the period in age of instant messaging. “The period was always the humblest of punctuation marks,” he began. “Recently, however, it’s started getting angry.” Crair noticed that in his text conversations, the period had stopped serving any grammatical purpose. Instead, it was mostly being used to express a certain tone or emotion. And that emotion was anger.