Star Simpson

If you don’t see what I see: imagine either item hanging from an awning, like a shop sign. Any breeze would cause a huge amount of blowing around. Now remove the awning. Those drones as shown are getting dragged around the sky by their payloads - at best.

The thing about aerodynamics is, like my other favorite engineering field (electrical), the way it works is extraordinarily difficult to just visualize, though it seems like it should be straightforward. It can be unintuitive.

Quadcopters - drones with 4 props like that - are popular in part because they can be easily flown with only a very basic feedback-control system that makes these much more tractable than the equivalent programming (to control an airplane or helicopter of the same scale, say)