The forest service is primarily to blame for not letting campers bring rifles into the campground.
Hunting rules have been limited in many places.
The bears have been taught bad lessons.
What about a hand gun? Bear Pepper Spray? Tent electric fencing? A dog? Any of these standard precautions could have changed the result.
National Forests are not the same as Parks, and are under the Dept of Agriculture. Atleast where I am, you can carry in National Forests.