I'm willing to bet blackdiamond didn't break anything.
You are correct. I'm scared to be there when I finally run out of luck and something breaks. After having two rigs and taking them on 4 or 5 trips to Moab (1,100 miles each way) and now the Rubicon (800 miles each way) without breaking anything that I had to fix on the trail is simply amazing to me.
On the Moab trip in April, that was the bdrunner shakedown I ended up replacing the oil pump gasket and installing a new twin stick, but I was able to drive out with both problems and neither was a result of the trail.
The only damage this trip was a small scratch/dent on the tailgate just above the bumper. I would imagine that not breaking on the Rubicon is more difficult that in Moab since the trail is so rugged and is full of opportunity to beat up the underside of a rig.