>I mean, I don't think it is fair to blame scientists, engineers, workers, etc. - let alone the tools that they use
I think it should be fair. It's no secret what these precision guided bombs are being used for, so why should the nerds that continue to work on them be free of culpability?
The invention of the nuclear bomb has led to the most peaceful period in human history. So to whatever extent the scientists and engineers who had some part in creating those bombs are culpable, they should be considered heroes.
No, it didn't. Democide in the 20th century, the death toll of which far outstripped the death toll from conventional warfare, reached its peak after the use of nuclear weapons against civilians in Japan. The notion that the post-nuclear era has been "peaceful" either absolutely or relatively is completely, ridiculously false.