I'd say you're overthinking this pretty hard. I feel like grasping this just takes a passing familiarity with basic western science fiction. The original point made by posters before you was that they are pleased with the diversity of faces that (more than it usually does) clearly indicated that members were either from other worlds or decedent from other worlds, and they enjoyed that. You are personally not moved nor impress by this. That's cool.
Pretty straight forward.