"falling aoff the motorcycle that is moving faster than people can sprint, even without a helmet, isn't that dangerous"
As someone who sells and fixes bicycles this is THE STUPIDEST FUCKING THING I'VE READ THIS WEEK. And I heard someone recently say "at least dolly Parton knew to stay out of politics"
ANY fall off a bike, motorized or not, can be fatal. If you're moving, those chances go up. If you're moving a heavy or large bike, it's even greater. It's why I refuse to sell bikes to anyone who says they don't wear helmets.
People have fallen from higher than the tallest building and survived. Doesn't mean it's not insanely dangerous.