"It is what they do, isn't it?" he bites back. "Brainwash people into becoming groveling, miserable shells of themselves. Some fucking justice."

And that is genuinly how he feels. How can there be any satisfaction in fundementally changing the person who hurt you into someone- something else? Falcon doesn't get it. They should pay retribution as themselves, and themselves alone.

(Or maybe, he refuses to get it.)

"Still," he continues, at Ren's question, "I will put aside my... grievances with their methods if it means keeping them from screwing shit up, no matter how well-intended."

It clearly isn't so much that Falcon's there to work with them, but rather to keep an eye on them, and to stop them if they do try anything. It just so happens that, so far, going along with their plans has been more beneficial than the alternative.

That, and he doesn't actually know how stealing hearts works, but he's not about to share that.