I would not be surprised if most lay people don't know why or how it's even that hard, or what goes into training. "Oh, it's just someone who has good balance" vs an awareness of the technical details of physical fitness.
Having watched a few of Cirque du Soleil's shows, I can confirm that A is much more impressive and exciting than C.
Sure, there's risk, but seeing how effortless they make it look is amazing. The skill to do it fearlessly is far more impressive than the fact that something bad didn't happen. Audience members expect that it won't happen. There's a visceral reaction, of course, but that's it.
I would not be surprised if most lay people don't know why or how it's even that hard, or what goes into training. "Oh, it's just someone who has good balance" vs an awareness of the technical details of physical fitness.