This sounds like a Group-selection argument (revenge is for the benefit of the tribe, or even for the benefit of the species; it doesn’t actually help the avenger). See my point 4.
That’s different from the standard argument, that having a vengeful nature is of benefit to the individual concerned because others can predict he is likely to take vengeance, so don’t cross him in the first place.
This sounds like a Group-selection argument (revenge is for the benefit of the tribe, or even for the benefit of the species; it doesn’t actually help the avenger). See my point 4.
That’s different from the standard argument, that having a vengeful nature is of benefit to the individual concerned because others can predict he is likely to take vengeance, so don’t cross him in the first place.