They are pretty blatantly just a propaganda outlet at this point, it is even obvious to former viewers.
And yet you believed it, because it agrees with your preexisting view.
The text contains sources in the sense that it's reporting on Nielsen data. I have no idea whether it's reporting accurately, but it would be surprising if not, because making up fake Nielsen numbers would be such a dumb thing to do.
p.s. can you please not cross into personal attack in HN arguments? also, please don't use allcaps for emphasis - this is also in the site guidelines: https://news.ycombinator.com/newsguidelines.html
CNN is especially eggregious. NYTimes should also be on the left column which is reflected in the votes "Somewhat disagree" with the current characterization as Center-Left (scroll down).
Edit: I am just pointing out a free publicly available dataset of what the population thinks of the media. Make what you will, don't shoot me.
Politics is preference, talks of truth are usually a pretense to strengthen a reason for a given preference.
There is presumably one true model that matches reality best. You could call that "unbiased", but since nobody can reliably identify it, we're stuck with bias.