TV Show "Lie to Me" Lies to Us About Swipe-able iPhone SMS Notifications

The TV show Lie to Me (season 2, episode 3 to be exact) decided to lie — they showed an iPhone where one of the characters could swipe between SMS notifications.

To the trained eye, of course, it was merely screenshots of standard model text dialogs over the Notes app, with swiping no doubt courtesy of the Photo App, and sound effects added in post. (The whole screen, not just the alert dialog, changed on swipe). Why did they do it?