Wornout Rubber,
You werent the Captain! You didnt make the decisions! You most certainly dont have all the facts!
It sounds like this incident scared you and you werent even on the aircraft. If you are that bothered about it, I suggest you refrain from flying from now on!
OSOP
P.S. Amongst other things, on the aircraft I fly, the cabin regularly reaches 8000' and has been higher so I am afraid your arguments are wearing extremely thin!