I have heard about "bad" photographers baiting the owls with mice to get the perfect shot. This is just a bad practice in general.
The rules I listed above were put in place when there was in irruption of Snowys showing up in the lower 48 during the summer. People would chase them in the daytime when they are trying to sleep. The reason for the camera information was to make sure the photographer was far enough away to as not to disturb the owl. Although... people can lie.
I guess they have continued the practice in an effort to give them some special protection. Snowy pics are coveted by photogs as most people don't have the opportunity to experience them.