Do you think things like the Manhattan Project were a mistake? Comparing AI to nuclear weapons is perhaps a stretch, but I think most people recognize that certain technologies or artifacts are best monopolized by our governing bodies. I think if the capabilities of AI systems keep growing on trend, it is not unreasonable to think wonton usage could disrupt society or cause mass harm.
There are many technologies that have killed and hurt a lot more people than nuclear weapons that are not monopolised by governments.
Cars and guns are two examples where ‘wanton usage’ can (and has) killed millions of people. Obviously they need regulation, but total control, even if it were possible doesn’t strike me as ideal.
Trump and Hegseth cannot be compared to Roosevelt and Stimson. (Notwithstanding Hegseth's illegitimate attempt to rename the DoD to what it was in Stimson's day.)