I live near a cove that comes off of the Chesapeake Bay. We have many of those zoning rules here for environmental reasons. Water movement and erosion are huge concerns here. Rules that affect density, frontages, trees within 100’ of the water…they are all necessary for the common good of the entire area.
We actually have a case on the other side of the neighborhood. A guy bought some land near his property for cheap. It’s not zoned for development because much of it is wetlands. He thought he could pressure the local zoning board to rezone it so he could make a handsome profit reselling it to a developer. As part of that effort, he diverted a creek and filled in the wetlands…and now several houses in the adjoining neighborhood flood (and there are legal repercussions for our entire neighborhood).