The point in 1984 is that *everyone* can fall victim to mental manipulation, and an observer can discover the manipulation easily. Like American sees the hypocrisy of Chinese democracy, and, equally, Chinese seeing the hypocrisy of American one. They are virtually identical in the observation, and both sides can easily convince themselves of their own conviction.
God, I only wish this time the leaders from the both sides are responsible ones, people like Trump on both sides can easily make wars in a wink of eyes with both sides seeing each other this way.
The sideline point is that one is the worst judge of themselves...