Quite the opposite. People naturally feel more “important” and “knowing” when they have access to internal or “secret” information, while in fact they perform the work of a cog in the system. In 100 years — often much less than that — none of that secret stuff would matter, and it will become clear that someone's life was wasted on transitory things for the benefit of some bureaucracy or corporation.
Every cog is required in order for the system to run. Even when parts of the system are not materially utilized, i.e. tanks that never see action, they have important strategic value in terms of deterrence and optionality.
It's probably understandable that people want to 'feel important' for a moment, but if they had the 'big picture' they'd realize that 'doing their job' is the most important thing they could do. It's easy for regular people to lose sight of that, just as it's easy for some people in power to take their roles a bit too seriously.