Look, we can all be under pressure to continue and get the max out of the aircraft endurance and are often pushed to use the absolute maximum available to get the job done. However, in this case the PIC used all of that and then all of his reserves and ignored the warnings until there was NONE left and the engines flamed out due to fuel starvation. At any time during flight the PIC should know their fuel state and that required to return to base or a safe point of landing with reserves intact, that didn't happen in this case.