I am disturbed by the constant, critical comments by uniformed people who lack professional knowledge and understanding of the impact geologic hazards have on our society. I have more than 20 years of experience working with geologic hazards, including rockfall control and rockfall research.
When the topplers said they pushed the boulder over for safety reasons, in my opinion, they were right. When a boulder has its support base eroded to the point that a human can push it over, it is going to fall on its own in the near future. It could have fallen if a person just climbed on it, possibly injuring or killing them.
The time to correct a geologic hazard is before the predictable event occurs and under controlled conditions. The best analogy I can think of is when an avalanche is purposely shot down in a controlled environment and before the inevitable happens. Ask the homeowners near Zion, where a boulder crashed into and destroyed their home, if they would have preferred that someone recognized its instability and removed it before it fell.