It's a consequence of the "attention economy." Extremely low overhead to content creation led to both a saturation and dilution of content, and, at the same time, a shortening of attention spans. It's a race to the bottom in terms of quality reporting. There's a vicious cycle that goes something like, distracted populace is attracted by sensational content, creates an economic demand for pandering and sensationalism, populace comes to expect sensationalism and pandering and reject quality reporting.

What got branded as the post truth era is really more of the post nuance era. Every piece of journalism must fall to one side or the other of some ideological line of narrative, or it's like a 3rd football team that no one has ever heard of running onto the field and making a touchdown in the middle of a tie game; it merely confuses and enrages the fans.

We're to the point now where a large percentage of people can't even comprehend any information or point of view that can't be shoehorned into a recognizable narrative. You can watch them get stuck in a loop of, "so what you're trying to say is..." until they succeed in placing it securely into one camp or another, or finally decide in frustration that this new information is useless to them and therefore meaningless