So, in a parallel universe, the same SQ 777 lands, same fire, same response time from AFS, same end result BUT the passengers were ordered to evacuate, how many of the armchair critics / experts would be lambasting the crew for needlessly putting peoples lives at risk by ordering an evacuation when the inside of the A/C was totally undamaged?
Fortunately fuel was not gushing towards the fuselage. Looking at what fire did to BA276 fuselage in few seconds, not evacuating 240+ ???
There will always be injuries with evacuation, I don't think crew would hesitate for one second to avoid such minor injuries.