[Fremmer]

Zeisloft is a predator. He killed the sows.

One way or another, other predators (coyotes, foxes, owls(?), etc.) will kill the piglets, and/or scavengers (buzzards, crows, coyotes) will eat the dead piglets.

If a predator other than Zeisloft (like a coyote) had killed the sows, the piglets would have remained for predators and/or scavengers. Either way, this is the way nature works. In the wild, if mamma dies, there's a good chance baby will die, too. That's not good or bad, that's just the way it is. It was not unethical to kill the sows despite what might happen to the piglets.

To each his (or her) own. I don't think that it is a matter of ethics; instead, it is a personal decision each hunter has to make about what he or she is is comfortable with. JMHO.