It isn't a fallacy, it is just to point out that the military is going to use anything that will give them an edge. Whether we civilians use it or not.

It's a very similar problem on a larger scale.

Starlink isn't designed to be military but it exists on the free market and can be used for military purposes so it is

Kitchen knives aren't designed for stabbing but they're out there for everyone so people are going to use them for stabbing