Earlier quoted context omitted.
Engine failure, running out of fuel, stalls, spins, midair collisions, disorientation, etc. Cirrus has a history of CAPS deployments, linked in the article and copied here: https://www.cirruspilots.org/Safety/CAPS-Event-History
Very impressive to see how many people were able to walk away from these incidents, I wonder what the counts of injury or worse would look like without this system? Also it seems like these small planes have a lot of incidents, I'm guessing due to relatively inexperienced pilots?
There's also less redundancy in the plane overall so if something goes wrong it's more likely to lead to serious issues. A large commercial plane has multiple pilots, engines, power sources, control surface systems, computers, sensors, etc.