It is not a fair point because the beach is not THEIR backyard. As much as they wish it was it ain’t so. Their backyard abuts the beach. The solution is if you don’t like the openness and free flow beach traffic don’t build next to a beach.
Oh, I certainly agree it's not their backyard. My "fair point" comment related to another poster's observation that some folks on the beach could present a safety/security threat to the homeowners.
My solution is not to remove the beach-goers. Any homeowner who feels threatened should just build a high fence on the edge of their property.
Note to the big-shot liberal homeowners: High fences (walls, if you will) work.