Patience Is Appreciated
It’s not the fault of a rich kid if they don’t know how to do certain things because those things are frequently done for them, so it’s not their fault if they don’t know how to do those things. It’s possible that simple tasks such as maintaining a car or even cleaning a bathroom will be difficult for them.
Because of this, we are grateful that the individual in charge (OP) was so patient when instructing the trainee how to complete the daily tasks. The spoiled brat just didn’t have what it took to be successful in this competitive field.