> What has happened at a large scale more recently is that bad actors actively feed people factually wrong stories and those are increasingly the only stories they get.

Powerful actors spreading incorrect information to serve their own ends is nothing new. Remember when the consensus was that the Earth was the center of the solar system? And when Galileo was prosecuted for spreading misinformation? That was about 400 years ago.

"Misinformation" implies "It is inconvenient for someone to hold the perspective because it threatens my power". Otherwise, we just call such notions wrong, incorrect, lies, falsehoods, invalid, etc.

"Misinformation" is just as dangerous as "well informed". What we now collectively know as a species was not infrequently once wrong according to some powerful historical consensus.