Ted Chiang does love to explore the counter-factual with empathy and openness where he somehow manages to take himself out of the story in the admirable Virginia Wolfe sense. The OP misses the biting critique hidden in these tales. For example Omphalos, Hell Is the Absence of God, and Tower of Babylon, can all be read as a devastating critique of religion. They all clearly articulate what the world would be like if c…
His own explanation of Hell is The Absence of God seems to suggest otherwise too. "He also said that the novelette examines the role of faith in religion, and suggests that if God undeniably existed, then faith would no longer be applicable."
https://en.wikipedia.org/wiki/Hell_Is_the_Absence_of_God#Bac...