Where has the idea that they didn't have enough fuel, or should have loaded more, appeared from? If they took extra fuel great. If they didn't they could have deviated around the weather and dealt with the shortfall later, like any professional aircrew would. I've found myself weaving around thunderstorms in the company of Air France in another region of the world and they were many miles further off track than we were without too much concern. If that is representative of corporate practice, and I've no reason to doubt it is, then we can put the fuel concerns to bed.