Hi,
Weird that the article did not state that you had to plug the cable up a personal location just to ensure it was lubed and ready to go!
Even in theater, with cables massively longer and thicker than what anyone uses on a stage for a concert, we would have known that was crap! The bigger problem we had was always furniture, and this and that going over the cable and pointed high heels stabbing them, and the like which while not a major problem would leak a bit, but not enough to hurt the lights, but enough to prevent the cable from lasting longer. We were always taught to be on the lookout for cable damage, since a metal heel on just the right spot ... would be a serious problem/issue ... and teaching stage folks this bit and piece is often the hardest part, specially when so much of the work is done in the dark, although for theater, not as much!