I know little of the "facts" in the VIE landing - maybe an advantage...
The 'A' for Airmanship is being driven out of aviation by company's, Training Capts etc. toeing the Co. line.
Say the FMGC, the thing we are increasingly driven to "believe" "follow" and "use to manage" did not allow for the extra fuel burn with the U/C down... and so predicted VIE with suitable fuel... and only as they got nearer did things not "add up"??
Very few accidents are caused by a "single event"... and unlikely any Captain, or indeed more correctly crew, would make such a crass mistake as to "decide" to run out of fuel, as they are being hung for here... Suspect 5+ factors led to this - and let's remember, the only casualty was an A310, no serious injuries (I believe)!
Edit: The above post overlapped with mine - interesting. Most importantly, we all have, and will, learn from it...