Petzle is directly responsible for every person they killed and injured with that terrible system. No different than makeing a car with the gas peddal where the brake is supposed to be.
Sorry but gotta disagree here.
If you didn't notice you only pulled 5 meters of rope through the anchor, or 55 meters, AND
didn't knot your ends, AND
didn't look for the ends of the rope while rappelling, that is plain NOT PAYING ATTENTION. Pilot error, not equipment failure.
Blaming end marks is a knee jerk victim protecting response IMO.
However they did the responsible thing by stopping production since obviously people were not paying enough attention to what they were doing.