Not familiar with the area. Is it feasible for a group to fund/arrange free boat transport to constantly bring people to the beach to enjoy it regardless of the easement?
The surf there is treacherous. It's not the sort of place you'd want to ferry people to. Besides, there is other beach access in the area that is accessible from land. Perhaps such an action would have value as a form of protest. I'd take the trip, but I wouldn't want grandma and the kids coming along.
Assuming you can traverse the waterline (don't know what California's access laws are, but I assume you are free to walk along it) how far of a walk is it from the nearest accessible beach?
Per the California Coastal Act, you're free to walk along the waterline (below the high tide line). However this particular beach is surrounded by rocky cliffs so it's unlikely you'd get very far. Closest access would probably be via kayak from San Gregorio State Beach 3-5 miles south. Though there are lots of pullouts along that stretch of Highway 1.
The trouble is you can't really traverse the waterline because there are lots of cliffs on either side of the beach - hence the importance of this access road.