Flying is more safe then driving but they don’t allow “amateurs” the work on or fly airplanes, there is way less airplanes in the sky vs cars / other stuff on the road and airplanes fly without stopping often and they have a guy in a box watching air traffic for them.
If they only allowed professionals to ride on the road with bikes serviced only by professionals and all the traffic was other motor bikes. It would be pretty safe but I could only imagine how safe this would be with cars only.
Imagine if we all walked instead!