Luke's grown past the point of dividing things into 'petty' and 'important'. It's all the same to him and he had been doing the guy a favor. Oh well, not everyone is always going to be grateful for his help, and some are even going to find it wrong. It's sometimes the fate of a Jedi to aid without thanks or recognition. It's also the burden of a Jedi to carry such a power, learn how to use it, and then be criticized or even feared by those who don't understand it.

Even as Wan is still talking Luke looks away, seems to be thinking about something else. This is why he usually doesn't tell people of his powers. They often think he has too much. If Wan only knew what else he could do... Then he smiles at Wan, nods to him, and turns to walk away. "Enjoy your day."