Wrong was absolutely done to him. Over and over again, for hundreds and thousands of years. I'm furious every time I think about it. But do you understand that where you screwed up the first time was in treating him like there's something wrong with inherent parts of what he is?

We made him into a leprechaun, and then a lot of us treat him like the rules that govern his existence are a problem, or an inconvenience, or an inherent injustice even if he chooses his deals carefully. That's not okay.

And yes, he was cursed, but the curse has literally nothing to do with him being a leprechaun. Nothing to do with his deals. They're separate issues.