Of course it would be better if fuel gauges were reliable, engines never failed and the weather was always VMC with a nice headwind on take off and landing and a tailwind during the en-route portion of a flight.
But that is not real life.
Nor is the fuel gauges alleged inaccuracy other than a contributing factor to the incident referred to.
Whether you like it or not flying requires people to make assessments of a multitude of (?complex) issues.
These factors should be taught and trained during the initial training for your licence but after that it is still upon us to update us so that we keep ahead of the game.
Unfortunately this does not guarantee, but gives a reasonable assurance, that you will not come up against a major cropper.
Attitudes displayed on 'that' thread which ooze the 'holier than thou' opinion are not helpful nor is this 'lets blame it onto the fuel gauges'
The big tin that had to be deadsticked a little while back had proper gauges I am sure.
Indeed to get rid of US/IMP and liters as different units would be a start but would require some fundamental changes in peoples' (and not in this case people as individuals) attitudes but would still require the conversion from liters to pounds.
(BTW there is no reason at all why you as an individual not can do all your measurements, calculations in liters and stick to one unit)
Incidents like these give us an opportunity to learn from other people's actions. We are all human and are all open to the pitfalls that others have already fallen into. By making a careful analysis from the material which is presented before us we can do that and put the ruler of our own standards and past performance against it. As others have said, if we are honest rather than judgemental, we will probably see that at times we were only saved by some luck, rather than our perceived wisdom and assumed skill.
FD