Fiction is not equivalent to nonsense; that is one of the most deranged arguments I have ever heard. Even within the fictitious framework that extends beyond reality, many of the major plot points make zero sense. The fiction still has to be logical.
And, no, the dialogue is just terrible. That speech that Anne Hathaway gives is one of the most insufferable monologue in film history, and that's just the tip of the iceberg. Every interaction pre-space made me physically cringe.