Here is an article by Herald&Review about why talking about safety on the farm is so important. The first article hints at one of the core ideas behind the self-report system: that knowing about someone else’s injury or near miss can be enough to prevent an injury.
Making a habit of talking and thinking about safety can also help with decision making under pressure. When people are trying to beat the clock or faced with a problem that is happening quickly, there just isn’t time to think things through. The more that you can make safety an instinct rather than something you have to think about, the more you’ll be able to make safer decisions when the pressure is on.