True, and the "first person singular = narcissism" equation that this makes struck me as strongly inappropriate. With this metric, a CEO who takes personal responsibility (e.g. "I instructed the finance department to do X, and I'm sorry about that but it is a necessity for reasons Y and Z") is going to be identified as a narcissist compared to the one who hides behind words weasel words like ("We architected and rolled out a brand new program, which we hope you will like very much (not)").

If that is your measure of narcissism, then it's fine -- but it should probably be called something else. I wouldn't be surprised at all if the first CEO in the above example was more successful than the second.