Wasn't the LAN engine failure due to "fuel starvation"? This seems to be an extremely biased documentary to say the least.
What these captains are basically saying is that they're willing to take-off with less then the fuel they're comfortable with, risking there own life and nearly 200 others because they're afraid they won't get their new base or a promotion or worst case get asked to leave. This says as much about them as it does about the bad culture within Ryanair.