In reality (but actually out of it), fake news has been happening since media existed, regardless of how "official" a mainstream outlet (or the establishment supporting it) claims to be. The only difference now is that we are entering an era of high technology, such as text-editable deep fakes, that will make BS a lot harder to detect.
Critical thinking skills and the ability to question and do real research will become paramount in this Brave New World. Without these skills and abilities, people will become more and more like programmed bots, existing in a completely artificial reality.
It's like sci-fi insider Arthur C. Clarke famously said: "Any sufficiently advanced technology is indistinguishable from magic."