A more apropos playground analogy might be skinned knees.
With the penalty that both the nurse and the injured person receives $1 from the person who caused the skinned knee. You can make the playground safer and tell kids to be more careful, but you'll still see Bruno falling on purpose and blaming Mary to the nurse.
You also have people who get shoved to the ground and just take it, letting the bullies get away.
People assume that there are more of the fakers than the pushovers, but most of the studies I've seen of the legal system show that there are way more people who fail to enforce their rights than there are people trying to game the system. E.g. only a small fraction of medical malpractice claims are clearly not meritorious. On the other hand, only a small fraction of those who have a legitimate malpractice actually sue. The same is true for environmental harms, etc.
With the penalty that both the nurse and the injured person receives $1 from the person who caused the skinned knee. You can make the playground safer and tell kids to be more careful, but you'll still see Bruno falling on purpose and blaming Mary to the nurse.