Meh. I don't think it's trying to "say" anything about the human condition. I mean you say its trying to say something but you can't tell me what it's trying to say. The show is fukkery for fukkery purposes. I don't see any metaphorical messages in this show.You really don't see this show trying to be deep?
From the recurring $50k (someone point that out in this thread and didn't even mention that Nora put $50k deposit on the house they wanted to rent) to Lily being a "bridge" and the most obvious being the opening scene of the second season and how that symbolism played throughout the season and fit with both the town and the characters. It's certainly more than just showing people's reactions to the rapture. It's trying to say something.