The chef should care about the diners, as should the servers. That said, when a chef is the leader of the restaurant, he's only as good as the people around him. This is a little more limited in a Top Chef environment where the chef is not hiring the servers. But Nick's tone in every interaction shown with the servers was rude and condescending. He had more skin in the game than anyone else - he won the momey, they just got to be on TV. But when he met with them to explain the menu he talked down to them. When he did the tasting, he got very pissy that some of them were not there, and played the tough guy replacing them on the spot. Yes, he has to make tough decisions to make things work for the service. But the tone he sets is critical. He could have done the same thing with a different tone that didn't send a message to the servers that he was superior to them. If he had, he would have built a team who all had a vested interest in seeing him win. If they cared about presenting him at his very best, then some of the errors during service may not have happened. In general, I don't think most people work at their best if they are in fear of the man in charge throwing a temper tantrum at any moment.