> Plenty of fake news on both 4chan and CNN, just different fake news. "Hands up don't shoot!" vs. naming the wrong man as the Vegas shooter
Those two sorts of things are vastly different. Major outlets like CNN, WaPo, NYT etc. publish fact-based news that contains inaccuracies as a component of intrinsically imperfect reporting and a business motive to publish quickly. 4chan pushes inaccuracies as the essential component of propaganda to advance narratives that are not guaranteed to be supported by reality.
So in a sense, yes, both do contain inaccuracies. But in one case, inaccuracy is the chaff, and in the other, inaccuracy is the seed.
NB since I get the feeling people might jump down my throat about this: I believe the 24-hour news cycle requires filler to stretch the news through the entire day, which makes it such that that television news and web outlets for newspapers have to rely on opinion and analysis to get there, which will probably contain more inaccuracy since it's indirect. But at least in those cases, it's people spinning a story that is originally fact-based, rather than fabricated from whole cloth.