A Singapore Airlines flight from London was diverted to Bangkok, where more than 70 people were being treated for injuries.
Recent research indicates that turbulence is rising and that climate change is a cause, specifically elevated carbon dioxide emissions that affect air currents.
Heart Attack / Epileptic Seizure induced from massive fear/stress/anxiety.
Heart Attack is more likely, but a violent enough Epileptic Seizure can snap tendons, ligaments or your neck.
Edit: You could also possibly choke to death on your own vomit.
All those could kill you while secured properly.
Edit 2: All sorts of other stress induced cardiovascular stuff like a bursting aneurysm or irregular heartbeats for a long enough time untreated could also lead to death.
A 5 point harness like what the pilots wear would be better
But we’re talking about people who couldn’t even wear a little fucking mask outdoors that doesn’t even restrict airflow without having a meltdown and shooting people so….