Is the guilt they experience more harmful than the movie itself?
Yes. It's a religion based on guilt. They are setting you up to fail, because people that are worried and guilty are easy to manipulate. You are either too busy and tired from their burdensome requirements to think about their failed predictions or you are so consumed with guilt that you try not to think about them at all. Either way they win, they would rather you be miserable than have you leave and be happy.