Range, for one, if what you're referring to as a mental model is 15" prop size quadcopters with an artillery shell strapped to them. For use <50km.

Now look at a photo of a human standing next to a shahed-136 size UAV for a totally different size scale.

https://www.rand.org/pubs/commentary/2025/11/in-europe-the-p...

I see. Thanks for both your answers.