Those who decry "self-esteem" think they're demonstrating its falsity by going to prisons and interviewing criminals.
These people are, by definition, liars and self-haters. They manipulate and cajole, something Dr. Crocker seems not to take into account. Why on earth would you go interview a liar and expect to get an honest answer?
If I wanted to know about self-esteem, I would go to the saints, to the producers, to the successful. These folks are supremely self-confident and are as prominent as they are precisely because they are generous and gregarious.