Where's the insurance fraud. Are you saying that they didn't have a loss or that they didn't use the insurance money appropriately?
If the latter, you're wrong. You're free to use the insurance money any way that you'd like.
For example, the cost to repair a car back to its "original condition" is often much higher than its value even though the car is still driveable. In that case, the insured is free to take the money, buy the car for its current value, which is significantly less, and pocket the difference.
If your house burns down, you're not obligted to rebuild.