This point needs to be emphasized more broadly than this particular clip - they believe a laundry list of insane things with zero evidence because at one time that Thing was the Current Thing and the Machine never deprograms them.
Most visible in excuses for the b/w IQ gap

All the things they claim to believe to forestall admitting the obvious are a list of justifications for long failed but still existent government programs.
The Regime has no mechanism for admitting error and backing off insane claims except vague embarrassment.

They live in an eternal world where they're the brave underdogs and up against the Establishment and so never take responsibility for the fact that they *are* the Establishment and have been so for the entire life of every person currently alive.