As someone who beat an IFS Hummer H3 on the ledges of the Moab UT trails, all I can say is a person has to be brain dead not to feel a lower ball joint that is starting to fail. When it starts to clunk, wonder and vibrate, it is time to get under and check, or have someone who knows how to check do some serious checking to see what is wrong.
So unless the guy (or gal) driving that truck did not hit the nastiest pothole known to mankind, they had symptoms long before it failed (or it needed replacement and he hit a pothole that finished the failure).
But we had as many Wranglers, with solid axle fail as we did IFS vehicles like Hummers, FJs, etc.