I would argue the reason is because no one rewards silence, there's still a need for people to distinguish themselves from a crowd, but as the technological age

I would argue the reason is because no one rewards silence, there's still a need for people to distinguish themselves from a crowd, but as the technological age starts to wane, we are at a point where less people have something worthwhile to say. You can see the same thing in the humanities, which went through all of this before there was a tech world. There's only so much you're going to find digging through Shakespeare, Milton, Chaucer, and Ovid for the 10,000,000th time. So people create new discourses, new fields of study, and new languages to describe them that aren't really new at all, but rather just a roundabout saying that the author didn't know what else to say.