In 1969 the book Inside the Third Reich - Memoirs by Albert Speer revealed the character and personalities of many of the Nazi leaders. Albert Speer was originally Hilter's pet architect and then promoted to run armament production. During this time he had much close contact with Hitler, Goering and Goebbels. He was sentenced to 20 years for his participation in war-crimes.
Here is a striking quote from this book (at the end of chapter 20) that attempts to explain how leaders in high-control environments (such as the Governing Body) can operate and even believe in their own fiction:
I have always thought it was a most valuable trait to recognize reality and not to pursue delusions. But when I now think over my life up to and including the years of imprisonment, there was no period in which I was free of delusory notions.
The departure from reality, which was visibly spreading like a contagion, was no peculiarity of the National Socialist regime. But in normal circumstances people who turn their backs on reality are soon set straight by the mockery and criticism of those around them, which makes them aware they have lost credibility. In the Third Reich there were no such correctives, especially for those who belonged to the upper stratum. On the contrary, every self-deception was multiplied as in a hall of distorting mirrors, becoming a repeatedly confirmed picture of a fantastical dream world which no longer bore any relationship to the grim outside world. In those mirrors I could see nothing but my own face reproduced many times over. No external factors disturbed the uniformity of hundreds of unchanging faces, all mine.
There were differences of degree in the flight from reality. Thus Goebbels was surely many times closer to recognizing actualities than, say, Goering or Ley. But these differences shrink to nothing when we consider how remote all of us, the illusionists as well as the so-called realists, were from what was really going on.
It is a fascinating thought that, until the this age of internet awareness, there was no widespread forum of "mockery and criticism" to expose the actions of the GB. But still, I am prone to believe that inside the "Bethel Bubble" this flight from reality will continue for some time.