Yeah, this is a key point that I don't think gets as much attention as it deserves in places like this. It's a little more abstract than debating points of doctrine, failed date prophecies, etc so I think the tendency may be not to give it much attention. The fact is, though, that this is one of the key ways that the cult enslaves people. By stripping everyone in the cult of any personal value or self-worth, they keep them as drones without the self confidence to believe they can make it on their own. This contributes in a large way to the "where else will I go" thought stopper that is so prevalent with those that see the problems but remain trapped in nonetheless.
I started to see issues with this philosophy probably in my late teens and it only got worse as I entered college and the work force. Especially when drawing a contrast to the average JW I was intelligent and knew that I wanted to work in a field where I could use my mind. For a long time I was made to feel guilty due to this desire. It wasn't humble. It didn't give attention to god. I shouldn't think so much of myself. I'm glad I didn't listen. This sort of indoctrination is just another component of what keeps people from trusting that they know better when they see things like the overlapping generation nonsense or the abuse issues or whatever. They beat you down to think that you're so completely worthless, they strip away anything that makes you unique or especially talented so that when a doubt arises you think so little of yourself that you cannot fathom to go against the cult and trust yourself.