That wasn't the myth they were testing. As other people have pointed out, people can and have been sucked out of airplanes. As I recall, the episode you're talking about even mentioned that fact.
What they were testing was that a bullet hole in a plane could lead to "explosive decompression" and cause a large hole to suck people out. Specifically the myth that a terrorist with a gun shoots a hole in a window and that causes a large hole that people get sucked out of. And they determined that such a scenario just wouldn't work: airplane glass won't fracture like that, and the hole the bullet creates wouldn't be large enough to cause enough suction to suck people out.
But they never tested anything like an exploding iPad or laptop. They were specifically testing shooting holes in a plane with a gun.