At worst, it's just plain ignorant. Through eight years of living on a sailboat with my family here and in Oregon, I heard the pros and cons of the liveaboard life debated at length. You used that issue in part to support your contention that the courts are the proper venue for this debate. But clearly no liveaboard wants sewage at his front door. These are people who don't wish to sully the marine environment.
Boat life puts less burden on resources than land-based housing.
Liveaboards require less space, use a fraction of the water and electricity, consume fewer goods and generate less garbage. Ironically, after moving ashore two years ago, I learned of the troublesome lawsuits related to Bremerton sewage that overflows into our waterways with every heavy rain. Inadequate public systems in Seattle and King County put 2 billion gallons of raw sewage into Puget Sound each year. Please don't make a handful of boat families the straw man. If government has an honest concern for tidelands, let it first clean up its own huge messes.