In short, no. Many, many threads on this site discussing this. Captains are paid to run the show, take the necessary fuel and manage the 'remaining' in flight correctly. F/Os are there to learn sensible fuel loads and monitor/shout if things go awry. It is very rare that there is not an option to divert if fuel becomes insufficient for safe flight. Anyone who feels the need to 'press on' in that situation and run the passengers/crew into a dangerous position should quit flying. If 'pressured' by their employer to operate in that area they should take the appropriate action.