I find it hard to believe that four trashcan lid-sized propellers could generate enough air lift to elevate a person, much less a person, their respective motors, power source, and frame.
Like what, paper mache? There needs to be a frame strong enough to support a person. You basically have carbon fiber and magnesium as really lightweight materials. And it still doesn't explain how it's lifting +250lbs of motor and human.
The rotors that size would have to be spinning quite fast. I tried looking up an equation for helicopter lift but they all involve horizontal airspeed which is basically zero in this case so I can't say for sure, but the rotors are too quiet for this to be possible. Even those little dinky motors in science kits make a really loud buzzing when you make them go fast.
https://youtu.be/odVFa_3lmiM