A metaphor is a comparison that does not use "like" or "as." (A simile, on the other hand, does use "like" or "as.") In the above example, Ross is saying that freedom of expression is LIKE an oil. Even though she is not using the word "like," she is still making a comparison between freedom and oil. Since she is not using the word like, the literary device is a metaphor.
They had a happy ending because they felt like they got justice and free rain over the socs when they won the battle and like they avenged what Johnny did.
Answer: I'd say this segment of the article will mostly attract Young Adults to adults. most teens or younger I doubt could care less what's being said here.