[It's less that Luke doesn't want to do it, and more that he doesn't feel he had a choice. Which, for him, is a difference. It means that what he wants doesn't matter.

But does it ever?]

I do want to thank you. For making him look at what he was doing in a different way than... than he would have, otherwise. I get that was you, and it matters. [He just also wishes that Bill had cared, on his own.]