Sea Level Rise is not the Cause for Coastal Erosion

Sea level rise doesn't erode the coast. It grows coast. Causes are on the Lands. They are: Coastal Depletion, Wind, Rain, Decomposition of Roots, Outfishing the Marine, Reduction of the Coastal Fauna, Drop in Sea Bed inclination etc.

The thrashing waves that we see now are

the after-effects of mentioned causes.