In the episode, they touched upon how Kong doesn't seem to know or understand what death is, but what I found even more interesting was how he only times he seemed curious about it at all if the creature he kills was of the same stature as himself. When its puny, ant-like humans, he doesn't even care; but when it's something that can look him in the eye, there's a sort of reverence. It was almost like he can't process death on that scale. How can something like me die?
I think it's an interesting take - albeit, probably not an intentional take - of how we only seem to care about killing when we feel like the person/creature/animal is "like us." In a way, I think that's Kong's journey, and by proxy, the audience's. That when we're faced with something outside of our comfort zone or scope of knowledge, perhaps the best reaction isn't to just kill indiscriminately.