I definitely agree...to a point. I have seen my CP fall out of a stunt, and it sucks, but that's life. I am OK with it, she is OK with it, the team is OK with it.
But what I am afraid of is putting SO much individual pressure on an athlete that affects the whole team. (This is assuming that a tumble bust becomes a major deduction.) And I am not talking about the ones who shouldn't be throwing the skill in the first place. I think of the younger teams (tiny, mini, maybe even youth) where a CP may have solid tumbling for the level but a fluke happens. I would hate to lose kids to cheer because they don't want that much pressure. I would prefer the team with terrible form but lands all back walkovers for example to be penalized MORE than the team that has great form and one unfortunate bust.
(And not saying an "unfortunate bust" shouldn't be penalized at all, but I would want this rule to target the scary stuff more.)