If martial artists were slightly stronger humans in the eyes of immortal cultivators, then regular humans were nothing but ants in their eyes. They could not defend themselves in any situation and had extremely short life spans.
When an immortal cultivator learned a single spell, they would be unbelievably stronger than any regular human and thus could act almost like gods. So it was common for immortal cultivators to view regular humans as inferior beings.
Yet, even though Bright Shadow Darwin was in the Crystal Skull realm, he treated regular humans like equals. If he truly wanted to, he could become a god-like being for those people, but he chose not to.