wizele . . . if you're a pilot, you should know that journos often misinterpret aviation jargons; and
Der Spiegel is hardly an aviation journal.
The "Bordeaux" en route alternate airport is just for planning purposes. It doesn't mean that if the flight couldn't make it to CDG that it must land at BOD.
If you study your big atlas you will see that there are many airports in NW Africa that could be used for diversion if there were a significant over-burn and adequate fuel to BOD became an issue.
In any case, pilots do not forego weather deviations to conserve fuel.
