He has guts. No 9 year old child has critical thinking skills which is why we don’t let them drink, drive cars, or operate heavy machinery.
Children aren’t miniature adults. At 9 years old you are still developing many mental skills that you need to be able to safely participate in dangerous activities. It’s why kids ride 100cc dirtbikes and not miniature 450 class bikes.
And that little show jumper? Those jumps fall down if you make a mistake.