It is UFO, unidentified flying object, not a tag for alien spacecraft. I don't know what is the big deal here. Nowadays lots of aircraft like 'copters , balloons are in the air, most bought by amateurs. They even operate them in swarm.
Frankly Zapata is the first with his fly board but certainly opened a door - with EV power getting potent I’m excited about new options.
Also I’m going to laugh when people finally start realizing all the current VTOL concepts are noisy as shit.