I have heard "brothers" expound on how going to the KH is like like getting a Harvard Degree the education is so good. Even when I was "in" I thought that was a joke, especial since usually they could barely speak in complete sentences. (of course elders all).
What you get from sitting in a meeting like the TMS that you cant ever graduate - nor be thought sufficiently to speak on your own at a door, is a false sense that you actually know something.
The whole JW experience leads people to this: The Dunning-Kruger Effect.
The Dunning–Kruger effect is a cognitive bias in which relatively unskilled persons suffer illusory superiority, mistakenly assessing their ability to be much higher than it really is.