Long time viewer, rare poster here.
I worked at Dreamworld for many years in operations and did in fact operate this ride. All my opinions are expressed personally and do not reflect the values or represent Dreamworld in any way today.
1. The media is enjoying the bait with this story yes but that is expected. If your wanting real facts without being superstitious you will need to wait for a full report to be released from the investigative team.
2. In my years with the company safety was incredibly important and we were pushed to write and submit reports of anything we saw or experienced that was out of the ordinary. Our training was very hands on and involved more then just checking your seatbelt and dispatching. Every morning as early as 4am an engineer would inspect a ride thoroughly and then once again before the park opened the operator and team would also do a less broad but intensive check on ride systems, gondolas, fire extinguishers, test run etc then sign the ride off/start up. Also as well as daily checks there is Annual Maintenance schedules.
3. There are modern fail-safe systems in place for human to machine related input and while I'm not an engineer I have experience in the day to day operations of the ride. As what QPS describe the raft seem to have snagged onto the raft in front and flipped back onto the conveyor system. I've never experienced such an occurrence before in my time working there, keep in mind things may have changed since then.
4. As I may have a general idea on how this could have happened I'm not willing to give my opinion until a full investigation is completed. All I can say is that when I heard about this story I was deeply shocked as I believed it was impossible for such an event to occur. My colleagues that still work for dreamworld are in complete an utter shock and could not believe that in 35 years this is the first case of death on the premises.
5. People need to realise that theme parks don't just build a ride and put people on it. There is a massive process beforehand in design, risk assessment, training, engineering, maintenance as well as consistent updates from ride manufacturers well after opening. Most rides designed these days have multiple fail safe systems that backup onto each other in certain "what if" "If this does this" scenarios. As for the age of this ride yes that is a point but it's control system has been revamped with the current only being a few years old.
6. Yes possibly operator error, maintenance, design or unruly guests on board may have caused this accident but it's the Swiss cheese effect that brings us to this outcome today, We shall see what the investigation brings.
You're more likely to be in a car crash then hurt during a ride so all I can say is that this is a rare tragedy that in turn will educate and improve the industry overall.
My condolences for those who were lost as well as to the operators, first responders and families affected.