I think it's the exception that proves the rule though. Word when it happened was he'd been cleaning loose rock on rap, and was not only wearing a blown-out harness (with a replacement on order at the time) but also apparently had a haul bag full of rocks clipped off to himself.
So -- if you are one of the world's most prolific climbers, use gear you have already decided to retire, and have an unusually high working load, you can maybe get your gear to fail. But it's still incredibly rare.
He was a widely known and well-regarded big wall guy who had freed gigantic routes in Pakistan, Greenland and the Yukon. I read his trip reports with awe. I would have felt out of place carrying his rack from the truck to a picnic table, much less talking climbing with him.
I had not heard that he was tidying up. He was also reputed to be very generous with his time and expertise. I find the idea of him carefully cleaning up a new route (while passing an increasing load through a frayed harness) almost intolerably painful to think about.