Trigger pull weight actually does have something to do with the tendency to accidentally trip when a handgun or rifle is dropped.
The adjustment of the tension often results in the sear engagement getting out of adjustment.
Secondly, triggers have mass. Some triggers have a lot of mass, and when a rifle or handgun falls and lands a certain way, the impulse load of that trigger mass can be more than 4 or 5 pounds upon impact.
Every year, someone drops a rifle with a 5 lb trigger from a treestand, it discharges, and kills them.
