This from the latest Watchtower article on Propaganda:
"Keep in mind that Satan does not want you to think clearly or reason things out well. Why? Because propaganda “is likely to be most effective,” says one source, “if peo- ple . . . are discouraged from thinking critically.” (Media and Society in the Twentieth Century) So never be content passively or blindly to accept what you hear. "
And then this doublespeak:
"Follow the advice given to the young man Timothy. Stick to the truth you learned, and remember where you learned it. (2 Tim. 3:14, 15) Surely there is ample evidence to show that you can trust the channel that Jehovah has used for nearly a hundred years now to lead us in the way of the truth. "
So in other words, put away your critical thinking and just accept/trust what we tell you!
And then this pearl:
"Do not be “quickly shaken from your reason” when faced with what appear to be damaging attacks by apostates or other such deceivers of the mind—however plausible their charges may seem. "
So even if what apostates say is damaging and plausible, which why are basically admitting it is, ignore it! Don't think critically about it.