If you're worried about weaponization of open source projects, your threat actors are just about any person with a computer, a couple thousand dollars and a grudge.
Boston Dynamics robot with gun: Quote: "At the Association of the US Army’s annual conference last week, Ghost Robotics unveiled its Vision 60 quadrupedal robot, which wielded a custom-made gun atop its already eerie figure."
https://www.extremetech.com/extreme/328299-robot-dogs-now-fi...
That said, I am not sure that a quadruped robot is much better for delivering a bomb than an RC car, other than a slight edge on rough terrain. Both would have an advantage over flying, since weight is a problem for drones.
I'm sure there's a lot more philosophical depth to the topic, and perhaps my quick dismissal of your criticism is equally unproductive as your comment, but I see a use-case for these (frankly super cool) robots in every day society/workplaces.
[1]: https://www.subtchallenge.com/results.html [2]: https://www.engadget.com/robot-dog-gun-ghost-robotics-sword-...