To be frank, as cool as that is, it is easy to overlook the same problem with drones: they are distinctively LOUD unless at a distance (and even then).
Would be interesting to corroborate whether unusual noises are associated with their arrival.
Good Q, hadn't thought of that. I think the back is providing most of the thrust and the hands are just to steer you, so you don't need to support the full bodyweight.
Didn't see the thruster on the back! However, their marketing claims you still have to support a little less than 50% of your body weight in forward flight.
I probably couldn't do that for the full 10 minute flight time though.
seriously! it's literally a Scooby Doo plot. what's next, Shaggy and Velma manage to tie them up, and Fred unmasks them to discover it's an evil developer who wants to scare the locals away?
https://youtu.be/DkZPI5m9SIE
“Illegal miners get their hands on some surprisingly niche tech” seems many many orders of magnitude more likely than anything related to aliens.