A qualified technician, to handle the rig, would cost X.
A stage help would cost 0.1 X
Indians are cheap and many in job roles are not qualified or care about their job.
I am 100% sure that this sort of accident happens all the time, and some temporary workaround is used to repair the issue.
Also, no one has any idea about anything close to a "safety margin".
If I were on the job, as an engineer, I would make sure that the ropes and slings are atleast 100% more than calculated values.