At least small planes in europe (CS-23) aren't allowed to have humans within an (iirc ~15 degree) cone of them.
This approach here seems to be done with no regards to such regulatory (and well-meant) requirements.
1) This is a powered lift craft, not a plane, so it doesn't even fall under CS-23.
2) There are classes where you're allowed less in exchange for easier certification. If the craft isn't operated commercially and doesn't need to leave national airspace, certification is typically far easier (at least for anything not heavier than a medium SUV).
You see this in so many ridable multicopters and it always makes me cringe... the plane of rotation of a heavily loaded, high speed rotating part is not a healthy place to hang out. The shared plane of rotation of 8 of them is 8x as bad.
This is still better than some of the similar designs. Some of them look really easy for the pilot to fall off and get ground up by the propellers. At least this one the pilot kind of looks sort of enclosed so they would not likely be able to fall out into the blades.
It’s a lot of weight for little reward. A duct/shroud may not even improve the safety in a significant way (if it were thick enough it could, but it’d need to very light)