Very interesting. However, nihilism has certain flavors to it. This seems pessimistic or deterministic or negative. One could see purposelessness as inevitable and inescapable, "so why bother?" Or, find the ultimate form of permission to do whatever they wanted, since there's no real culpability if there is either ultimate determinism (how could anything be your fault, when it's simply symptomatic) or ultimate indeterminism (relativism makes nearly an moral stance arbitrary). I guess I see it simply as the freedom to write your own rules for yourself. You can dig to the core of yourself and see how you untangle yourself from the strings that tied you up in development, while finding a way to navigate with the innate stuff you have as hardware to work with.
This "Learned Helplessness" seems like someone getting stuck in the detanglement stage and ends up getting further tangled -- kind of like believing your own propaganda. If you can see it's yourself placing these beliefs and you're in control the whole time, there has to be some cracks to break you out of it there.