Ix: The only “actual facts” you’re going to get are the second hand, massaged twaddle the ATSB publishes these days, and rumours on PPRuNe.
Do you actually fly aircraft and do fuel calculations and record fuel in and fuel out?
Would you jump into an aircraft and say: “The gauges say I have X amount of fuel so that’s the amount of fuel I have.” Really? If so, best to take a break from flying until you’ve done BAK again.