This leaves us with the possibility that during an earlier portion of the referenced flight, improper and/or questionable decisions were made, that could well have been a causative factor.
I would be interested to know what they would have been? The aircraft was cold soaked during a Siberian transit as far as I remember and the tanks recorded low fuel temperatures which were mitigated by a reduced flight level being sought.
The idea that ice crystals of the type found could block the engine fuel filters had never even been considered by Boeing and took them a long time and exhaustive testing to find. (Possibly fitting a centrifugal fuel filter could have avoided it)
Sadly, as has been the case for many years, the flight reference cards for many aircraft are written in blood as it takes an accident to show what hasn't been thought of. Luckily in this case they all walked away.