Absolutely. Myths are meant for us to dive into and derive meaning from. These characters are total archetypes, they're giant walking metaphors. And the films explicitly deal with a struggle of ideals and the power of symbols.
The immediate, plot reason for the line was to set up Talia's reveal. But to say the line doesn't offer a window into a contrasting nature between Batman and Bane, where one had the strength to escape the pit (another giant metaphor) while one didn't...it forsakes a larger view of the movie and the characters.
Well said.
Although it becomes irritating to attribute a metaphor or deeper meaning to every single line in a movie in a contrived manner, I think this is an instance where you can regard what is being said at more than face value.
Not everything needs to be a metaphor. But there's a continuous subtext in Rises (because that's the subject of the topic). That usually happens with good writing.
last son, I think Bane's conversation with Bruce after they arrived at the Pit is the biggest support for this theory. He gets a haunted look when he talks about people climbing over one another to stay in the sun. Like the stuff he saw in the Pit lingered with him.