"We'll know our disinformation program is complete when everything the American public believes is false." - William J. Casey, CIA Director (1981)
https://naacp.org/articles/spread-disinformation-and-how-we-...
https://naacp.org/articles/spread-disinformation-and-how-we-...
That honestly sounds like it is either fake or a joke taken out of context. If that were true, America (and thus the CIA) would collapse and become uncompetitive with its adversaries. The American public is the foundation of the American economy, and people who know only false things aren't very productive.
The naive reading also dovetails too nicely with the mood in some corners to view the CIA as a cartoon villain, which just does evil things all the time for no reason.