I don't normally kill any children in BG3, even the gith, who can attack you, I try to keep alive.
That said, it is subjective, if you see the goblin camp as evil, but they are roasting a dwarf, when you arrive, treat an owl bear baby badly and torture a young man. So I'd say, that is pretty evil.
Normally, I don't have a problem killing the goblins and their leader. I keep Abdirak, the Maglubliet goblin and the kids alive, because none of them are hostile towards me. And I don't go out of the way to kill every small group of goblins in side rooms, if I don't need to.
But from my point of view, the Absolutists are the enemy,. The first thing you get to see, is a group of goblins trying to attack the grove. Yes, some of them are brainwashed and tadpoled, but they are also a lot more aggressive towards me, than the tieflings and druids ( minus Kagha).
