First. Are you sure Gib is a berserker? There are several rounds of fighting logged here and I did not see one deathblow. None even attempted. A hero berserker dual wielding going a fight without even one deathblow attempt, much less landing one, would be remarkably bad rng to the point where I'm doubting he's a berserker. Maybe, but seems unlikely.
Second. I am shocked, genuinely shocked, to see a rager (assuming Gib is one, there's no evidence of it in this log, but I'm sure you're right he is, even if not perhaps a berserker) wearing the dwarf symbol. A rager with heal and sanc? Using an item like that? Things really have changed if that's permissible, and for the worse. I really sat there with my jaw on my desk when I read that - I can't even imagine the carnage if I'd been allowed to use that with Azilaph or any other dwarf rager.
Third. You fought only one of them. As someone else mentioned, Oth fought the devil. Perfectly fine. Same when villagers fight necro zombies or any other enemy charmies. You are you. Ragers are all about self sufficiency. Too bad for you (generic "you" for those that rely on charmies) that you were too much a "coward" to learn to fight your own fights and need to make slaves or undead to do your work for you. As long as only one of them is punching you in the face, you've no gripe.
Fourth and final. I think you, original poster, need to flip your perspective. You can pretend to know what others are thinking all you want, but that's all it is, pretend. It is equally, and frankly I think more likely that the villager stood where he did because he assumed you would, you know, follow your own rules, and so he'd be safe to recover and then attack at his choice. You want to paint yourself as the victim but even you admit you pretty regularly broke your own laws/rules, and in my day any one of them, much less the three you admit, would have had you uninducted. More change I'm not fond of. In any event, regardless the motivation for the villager's being at the city gates, whether to be in a safe spot or to catch you being careless, the fact remains you actually were careless, and that's part of the job.