I know you didn't intend to make this a literal argument, but I have to disagree.
Yes, there are definitely plenty of moments during a performance that exhibit either great skill, phenomenal talent, or excellent/breath-taking design... and you stop and go... 'um...why isn't anyone applauding?' And yes, these moments that SHOULD be rewarded with applause. It seems like audiences only applaud for stuff that, on the surface, is exciting, such as big tosses and obvious visual/musical "moments."
But I won't suppress applause for a lousy catch or a lack of technique. These kids are pouring their hearts out onto the floor and trying their hardest. As we all know, there are times when being on that floor is TOUGH and takes a lot of courage. World class or B class, it doesn't matter. There is no reward for these kids other than the applause they receive from the audience, and they deserve that.