I have a limited understanding of the situation, but more backcountry places are putting restrictions on dogs. They are not allowed in most National Parks and are required to be on leash in Wilderness Areas and my local Open Spaces. These rules are to prevent the bad behavior caused by a very small number of bad owners.

The majority of good owners need to exert more peer pressure on the bad owners. If this is not done then the rules will become more and more restrictive.