Seriously, I'm surprised rockfall doesn't rate higher on this list. The more I climb, the more I'm aware of that as the least predictable hazard in the mountains. I think many of the tragedies we've read about in recent years bear that out.
I feel like falling from stable rock is under my control, and I can exercise caution to not put myself in a situation beyond my ability. But failing to test a hold, or not recognizing rock ready to slide, is something that could catch you by surprise if you let your guard down for even a moment. Awareness and experience can help a climber steer away from unstable rock in many cases, but it's unavoidable on some routes. When I think of the scariest 14ers I know, it's all due to rockfall hazard: Little Bear, Mt. Wilson - El Diente, Snowmass, Pyramid, Bells. (Not sure about Capitol, haven't really come to grips with that mountain.)
Maybe voters are categorizing a fall caused by rock giving way as "falling." I would lump that under "rockfall" as the root cause. Same with getting engulfed in a rockslide. Both have taken lives of well-known members of this community in recent years.
A vaincre sans periol, on triomphe sans gloire