In spite of the name, these will wear out over time. However, one of the advantages of these was pointed out in the article -- they are much easier on knives than cutting boards made of harder materials.
That fact, alone, makes a self-healing cutting board a good investment for those with top quality, high dollar knives. A set of quality knives costs a heck of a lot more than a cutting board. One would be a lot better off replacing a cutting board that wears out than replacing expensive knives dulled by cutting boards with hard surfaces.