They have been doing it forever, yes. Their aim is to sell stories, not to tell the unbiased truth. I doubt there is one single source that is reliable, they are all written by humans.
I think the difference is, when people used to buy papers, they tended towards those that aligned with their views. Online algorithms offer you what you are most likely to read (often because it's the opposite)...
I saw the previous thread (naomi's) and the "truth" as far as we know, was there as well.