You want low angle shots?
You're not well funded enough to get good satellite photos?
Is there anything that building a delivery mechanism to carry and then drop gallium onto a plane does that an actual gun wouldn't?
Hypothetically it might act as a more subtle form of sabotage, the goal being to bring down a plane in the air. It might also be harder to cleanup/patch than a bullet hole if detected. I don't think it's a serious threat though and is really acting as a stand in for "fancy forms of sabotage".
No need for a space program, or going through someone that does.
Just acquire drone > use drone.
Also, a drone could have radio receivers to collect short range comms.
[https://www.forbes.com/sites/jonathanocallaghan/2019/09/01/t...]