There is no try: there is do, or do not. You are very much doing.
At the end, you're making an impassioned argument for a reading of a line that I don't think is at all essential. What matters is that a line like it is there. If you want to argue that it's snappy, okay. But the actually content of the line isn't intended to say anything deeper than what we get from the scene. It's just a deep read that really doesn't hold up because nothing about what the deep read is saying is addressed by either character at any point during the movie.