I'm wondering if it works better then current technology. If the old tech is more stable and easier to upkeep than upgrading to a modern system, then power to t

I'm wondering if it works better then current technology. If the old tech is more stable and easier to upkeep than upgrading to a modern system, then power to them. I suspect it's more of a priorities thing where the DoD rather throw money at drones or a cyber unit then on nuclear weapon systems since those are more relevant to today's world.