Comment by quesera
I don't miss the causality at all. I think you greatly overestimate people's willingness to critically examine ideas that are surfaced within their affinity group.
Causality works both ways. People are drawn to their affirming media, but they are also assimilated into it. And it's not like they are unformed lumps of clay before they "choose" what media to consume -- often this is a product of their developmental environment to begin with.
Where they might not have preexisting biases, a framework for thought is provided to them by the group. These groups are sometimes tightly, and sometimes loosely, defined. There is always a fringe. But independent thought is far far from the strongest influence in 99% of people.
This is such a blindingly obvious truth of the world (to me) that I can't formulate a serious counterargument. Can you?
Again there are obvious and mostly endless counter-examples to this. A couple of examples from both sides of the aisle - when Fox News fired Tucker Carslon, their ratings plummeted and he ended up getting [far] more viewers on X than FoxNews gets during prime time broadcasts! When the NYTimes published an editorial from Senator Tom Cotton suggesting that the George Floyd riots and violence should be brought to an end by deploying of the military, their readers freaked out to the point that the director of editorials was "retired", and they publicly announced they would be rethinking about what they publish.
People pick their worldview and biases, and media (in current times) sees it as their role to deliver on those biases. When they don't - the audience leaves and moves on to somebody who will.
The only real superpower media has is to overtly lie to people. And on issues that people know nothing about it is generally effective. But as they learn more about the topic, the views shift more towards what people again choose to individually think about an issue. And as a longer term side effect of this, this superpower is completely self defeating because people begin to completely distrust the media. I could show polls on that but I'm sure you already know trust in media is basically nonexistent. The funnier one is this. [1] The perceived ethics of journalists lies literally right between lawyers and advertisers.
[1] - https://news.gallup.com/poll/467804/nurses-retain-top-ethics...