Another way to look at it is the problem that many people rely on the news to tell them when something bad is happening. If you don't analyze your sources constantly due to a variety of reasons, then you are suspect to being rendered blind simply by omission. If you don't realize how badly the media sphere has gotten polarized since the 2000s, it is easy to dismiss valid critiques as bad faith partisan smears. Consumption of the news in a single source method is a great way now to turn yourself into a partisan.
In the age of a non stop stream of content with an unprecedented amount of choice, it can be difficult people to exert the discipline needed to consume in a method that creates a nuanced world view. People have jobs, kids, and things they'd rather do than confronting and synthesizing opposing viewpoints. It's just easier to wrap yourself in a bubble rather than change your worldview. The destruction of the era of responsible, sober journalism due to the economic realities and consumption habits of people is wreaking havoc in our political system. It doesn't help that there are inherent biases in many journalists themselves.
We've placed an increased burden on the American population to sort through a cacophony of bias to create the truth. Is it a small wonder than considering people never had to before, we're falling so short now?