Because they don't mean the same thing? There are lots of hypocritical people and cultures but not all of them are interesting. Also, "hypocritical" carries a

Because they don't mean the same thing? There are lots of hypocritical people and cultures but not all of them are interesting. Also, "hypocritical" carries an air of condemnation, and perhaps that's not what the poster wanted to emphasize. Finally, sometimes you get your point across better by letting the reader discover something ("hey, that sounds awfully hypocritical ...") instead of bluntly asserting it.