The problem is propaganda is nothing more than a point of view expressed over and over. Whether it has much basis in reality is not relevant.
It is funny how the mainstream news media went from being trusted to now just outright liars. This was mirrored by the financial networks. As you mention, cable news takes it to a new level.
Actually, it was always that way, people didnt just realize it. Rather, Brokaw and Jennings told us what they wanted. Today, the claims can at least be double checked.
Of course, with #ai, this is going to get really interesting since we will see deepfake videos that most believe.