Responses

The way I see it, it’s more of a status thing. The painter having origins of a lowly commoner and him being a prince(???? I don’t remember), he doesn’t even meet the carrot. He probably sees it as common sense that him extending his hand/help towards someone lower is like a blessing to them or something. So him defying him probably does more than just tick him off
Yoon claimed "You took advantage of my kindness" Huh?!!! Excuse me. How did the kid being held against his will take advantage of you?
Yoon does the carrot and stick method. And he thinks giving the carrot means the Painter should be ever so grateful. Yoon be like, "I know I am holding you captive, but I'm the victim here. You're the one taking advantage of what a "nice" guy I am."