Some of you seem to assume that only LOCO's carry the minimum fuel required on a sector. Having worked for a major/legacy carrier myself, I assure you we do exactly the same, I have even heard the odd ground engineer say to me "XYZ wouldn't go with that problem" or "is that all you want?" and I'm talking with regard to a couple of companies mentioned here.
I agree that a re fueller may think, blimey they arn't taking much, the others took far more, but did he know of pax loads, tankering, deficiencies, weather en route etc etc?
I think....no he didn't.