It is still too early in the investigation but we can indulge.
On landing, if the cable failed, it must have failed instantaneously. Metal under this level of stress do not fail gradually. The next question is when did the cable failed? If the cable failed the moment it was stressed by the jet, there would have been more casualties and equipment damages because the cable would have failed early in the landing progress as the jet pulls on the cable. Remember that on carrier landing, the pilot push throttle forward just in case he missed the cable.
Failure to arrest, or catch the cable, is called a 'bolter' and with the jet at full throttle, the jet would have just continue flying. A bolter would not cause injuries to anyone or equipment.
But the pilot ejected. That mean most likely he caught the cable, then the cable failed. Because he caught the cable, the jet lost some forward momentum, so when the cable failed, the jet did not have sufficient speed, despite full throttle, so the pilot had to eject or go into the waters. The flailing cable then caused personnel injuries. If everything speculated above is true, then this has nothing to do with the F-35.
We should not expect anything other than ignorant juvenile glee from people here.