I don't see anything there about punishment. It's simply a moral judgement of people who want others they don't like (for one reason or another), killed.

Personally, I find it ridiculous to differentiate between murdering a person for e.g. money, and murdering a person for vengeance, and absent an imminent threat for which deadly force is generally authorized, I don't support the use of it.

Voting to put in place a system that arranged organised violence and oppression is to me equivalent to conspiracy to engage in what is effective violence against a huge number of people, and morally vastly worse than one, or a few, individual murders.

I happen to think that extended stays in solitary confinement are worse than simple murder. So yeah, if you're into retribution to the point of preferring or not caring if prisoners receive such treatment, then I think your morality is highly questionable.