> The thing that I really struggle to understand is what the grand vision behind this is.

This is something so far removed from the way normal, constructive way people (have to) think and behave with each other as a prereq to participate in society that they will inevitably fail to see this parasitical dynamic, because there is no way they can relate to that from their own frames. Even when we learn about this we will instinctively dismiss it. It doesn't fit our frame of reference, so we decide this can't be true.