Im not sure what you'd call it when liberals listen to... Slightly biased news, and conservatives listen to people with clearly expressed political allegiances who refer to conservatives as "us", liberals as "them", and talk about how to politically defeat the other side.
Just because bias is hard to separate out, doesn't mean everyone's behavior and preferences are equivalent mirror images of each other.
You could find someone yelling about defeating conservatives on YouTube but that viewership is going to be lower than NPR... thus liberals prefer the less-biased sources...
Each side of the political spectrum has a spectrum of biased news. For example, Huffington Post and The Young Turks are liberal news sources which are very partisan. The Economist is a fiscally conservative magazine which is less partisan, Uncommon Knowledge is an interview show with a conservative viewpoint, but also an educated and intellectual viewpoint.
If you're a liberal minded person, your exposure to conservative sources of news is likely excerpts of their most grievous offenses. Hence, the liberal bias suggests that conservatives get all their news from Tucker Carlson making funny faces at people, or Alex Jones identifying gay amphibians. The result is the belief that liberals are reasonable intellectuals and conservatives stupid fools.
Just because bias is hard to separate out, doesn't mean everyone's behavior and preferences are equivalent mirror images of each other.
You could find someone yelling about defeating conservatives on YouTube but that viewership is going to be lower than NPR... thus liberals prefer the less-biased sources...