Ping is coached by "Tinman" Tom Schwartz. He is known for *not* pushing athletes too hard, trying to guide them wisely, looking toward long-term development, and holding them back some. Specifically, he holds athletes back from much high-intensity VO2max-type training (does very, very little), the very type that tends to burn them out if overdone. He does believe in sufficient mileage, but also not to be overdone, and he keeps the "filler" miles at a slow pace. Tinman is likely just as concerned as everyone else that she not burn out. I would wager more so.
If you read up and look into Ping's background, you will find the pushing all comes from within. She is highly enthusiastic and self-driven. The dilemma is: Do you hold kids like her back so much that they then rebel and turn against the guidance they receive? Kids with that much motivation can become their own worst enemy if there is no moderation from above, go overboard and then crash and burn. Or if you attempt to tamp them down too much on the other hand, they might instead simply quit the sport out of frustration because they can't get out from under the heavy thumb of their parents/coaches any other way.
Or do you instead let them shine while at the same time attempting to guide their development? You guys act like it's all the parents'/coaches' fault. Some kids/talents are a fierce fire it is very difficult to handle, no matter what your perspective, or how you attempt to handle things.