That argument is about as strong as "oh you like retribution? That means you support <vile torture / mutilation>!" Deliberately confounding "reasoning for choi

That argument is about as strong as "oh you like retribution? That means you support <vile torture / mutilation>!" Deliberately confounding "reasoning for choice of punishment" and "severity/extremeness of punishment" and "other moral guidelines outside the 'punishment-reason-axis' that inform the option-space of punishment" is obvious rhetorical trolling, who cares what the precise "fallacy-name" is for this sort of behavior. Now that I think about it from the other end, I don't see how "hurting their family" is excluded from "retributive justice" solely by the definition of "retributive" either. It's been treated as a perfectly valid act of retribution in many cultures across history (and the present day, probably) - see every story about feuding clans killing each others members; they don't do that because they think it's going to dissuade the other clan from enacting their own vengeance in turn.