What’s changed is that writing now comes in both formal and informal versions, just as speaking has for so long. We write all the time now, and most of what we’re writing is informal: our texts and chats and posts are quick, they’re conversational, they’re untouched by the hands of an editor. If you define a “published” writer as someone who’s had something they’ve written reach over a hundred people, practically everyone who uses social media qualifies—just make an announcement post about a new job or a new baby. It’s not that edited, formal writing has disappeared online (there are plenty of business and news sites that still write much like we did in print), it’s that it’s now surrounded by a vast sea of unedited, unfiltered words that once might have only been spoken.

(emphasis mine)