What’s the advantage to a 5.3g shaped charge here?

There’s already drones loaded with Hexanitrohexaazaisowurtzitane, such as the AeroVironment Switchblade.

But I suppose something that can fly all day… loitering … is even more terrifying if applied

Why do you think a shaped charge is the correct ordinance type in this hypothetical?

Not the slaughterbots bullshit again. If someone wanted to replicate the slaughterbots video, they would use the small drones only for face recognition to find the target and then eliminate the target with a small mortar from a bigger drone above. You know, the boring stuff that terrorists have already done in the past.