The shoreline is walkable and in either direction will take you to shaded roads or trails with a reasonable slope. It's probably a case of people getting to the bottom and not wanting to put in the effort to walk along the beach to the trail that goes back up gradually. The local S&R got annoyed at spoiled people expecting to be "rescued" from their laziness. You don't have to climb back up the dune in the "blazing" sun.