Simple laws of physics show how much energy is needed to lift X amount of weight . No amount of fancy 21st century computer science is going to change that.
I'd go with the slide rule guys.
Sure lightweight materials for the airframe, motor and batteries will help, but I don't see them making anything with VTOL capability that can lift one or more occupants that cannot be done by any helicopter, and have something that has an acceptable noise footprint. Unlike an aeroplane VTOL machine uses maximum power for both take off and landing.