And every cable engineer knows the solution, a cable-end guard that distributes the sheering force gradually over the final stretch of the cable.

It's not just Apple that is turning something that would be durable into a consumable for profit. At work for decades Dell notebook power-supplies would fail in the exact same manner, cable fraying at the hard edge with the connector plug. It was such a predictable issue Dell at one point even offered a power supply renewal option together with their battery replacement subscription.