Reading the pompous and sometimes ghoulish ruminations of the armchair experts, who evidently think they're really clever, reminds me once again why I rarely come here anymore.
People have died. Trained people will find out the cause. Trying to impress each other with your ill- informed speculations is not going to fix anything. Putting IMHO in your comments does nothing except highlight your pomposity. Why is it that every accident is used as an excuse for people on here to show off how clever they think they are? Personally, I find it distasteful, and extremely disrespectful to the people who lost their lives, especially when you start speculating on human error, or worse, possible suicide. If you're doing it on a private chat, that's one thing, but the posts here are all public.
You're no better than rubber-neckers driving past a car crash.