It really isn't, in my experience. What makes you think "everything military = death business"? The military tends to be mostly logistics, and ends up funneling resources to tons of efforts that benefit the nation as a whole. One such investment is CCDC SC, which was the subject of a 99 PI podcast, IIRC. They've worked for decades to research and operationalize shelf-stable foods, for example. These approaches have made it into civilian foods for the same reasons they are used in the military: convenience, especially under dire circumstances.
https://en.wikipedia.org/wiki/Combat_Capabilities_Developmen...