some of those listings are crazy and some very vague:
terminal ill person feels bad after getting off ride
guest recently released from hospital with lung condition has trouble breathing!!!!
guest got off ride didnt feel well!
some are just silly in that they dont tell you anything. Oh and all those 'hip fractures' from falls, usually its actually the other way around, usually the hip fractures causing the person to fall.
Every theme park has its share of injuries, every sport arena, every grocery store, ect ect. Accidents and injuries happen everywhere. I just feel bad for those that have a major incident while on vacation. Those cases where you hear about a death, especially that of a child, are just horrible.

Thankfully these events are very very few when weighed against the millions of 'uneventful' trips that get taken.
Two trips ago, while at WDW my mom shattered her knee cap. I've learned my lesson....on future trips....I dont take my mom!
