I dunno about the guy who shot him, but Chris Kyle was well and far beyond just some pawn in imperialism. He was a proud imperialist who glamorized his murders, took pride in his exceptionally high number of murders, and even fantasized about doing the same to displaced, starving, thirsty Americans.

At some point people move beyond being mere "victims" of imperialism (being indoctrinated from birth) into being willing actors with full understanding and agency in their actions and Chris Kyle epitomizes it.

I don't know if he ever expressed real regret for his actions. I don't think he did, but, even if he did, helping some guy with PTSD isn't going to undo or "restore" victims of harm he did. The best he could do is be an active mouthpiece against imperialism. And uh he did posses a particular set of skills that could be useful towards that end...

"Defect, Yankee!"

"You cannot win, Yankee!"

But yeah, for people like that they probably can't ever complete a journey towards restorative justice. Most of them also don't even try. They're never held accountable by any government. Society has no punishment for them. The only punishment they receive is PTSD or a general feeling of "I'm a bad person."

If they want real justice they'd have to submit themselves to their victims/victims' families. Which seems laughable to westerners because everyone inherently knows what those people or governments where they committed crimes would seek as punishment... dude killed fuck loads of people in a foreign country. People who were engaged in a righteous and legal defense against him. So instead he and many others go "woah, fuck that!" and decide to drive their vet buddy to the shooting range for some amateur style exposure therapy... they/society never reckon with facts like he was literally shooting people ("terrorists") who were defending their homes, land, and people from an invading force. Americans just see all his victims as "terrorists" like mindless jihadis who only wanted to murder their own people instead of what they really were which is desperate, angry people trying to resist imperialism. The same people who celebrate Kyle are the same ones now days who celebrate the "brave IDF!" or whatever as they bomb another neighborhood into rubble.

That's why I have nothing but contempt for him and why it makes me sick when people try to make him into a good guy.

Didn't he get shot at a gun range?

Seems like a bad place to try to help somebody with PTSD.