The original post seems to imply that this is something new. It's been going on since I've been able to understand language, and it's called signal to noise. Back in the 70s (and I guarantee through all history) we were inundated with a false narrative. By the time I got to college, I realized how much "history" is, as they say, written by the victors, at a profound level. Our history books are filled with names and dates around "great events," like wars, technology, governments. Well, what about the other 99% of the time? Aren't these the aberrations in history, and the times with peace and productivity and growth the real story?
So nothing new here. People respond to the history they WANT to hear, not the truth. Not what really went down. It's every time some histories tells you what someone BELIEVED, when it really is just what the are recording saying. In the US we are at a nadir of misinformation. But the messages and the techniques and the lies are the same as always. History is hard. Propaganda is oh so fucking easy. That's why it is so important that critical thinkers are in the driving seat, and not thrown off the bus. If it means moving to a new home 6000 miles away, then DO THAT. Do whatever we need to do to keep history as true as we can make it.