Video
19 F,
If that is the same thing shown a few times on various Swiss TV stations, then it answers all the questions and accusations made here. The situation was hopeless and the runway could not have been reached before the ship became unflyable.
By the way, this was not Swissair's first experience of smoke;
Coronado lost after terrorist device caused smoke after takeoff from cargo hold - last words - we cannot see the instruments - we are crashing - goodbye everyone. This particular case MAY have been rescuable with quicker action.
MD-80 with heavy smoke in cockpit and subsequent landing in MUC in almost blind conditions. This was caused by a short to the emergency power switch which could have only been disconnected by a crewmember descending through the small hatch to the EE compartment and pulling th 80A CB by the battery - if they had known. Try that by the way with the other pilot flying on minimum panel and fixed stabilizer, with your smoke mask and goggles on!
As a result of that incident the checklist philosophy was changed from the FAA approved "try this and wait""try that and wait" version, to the MDC "switch off everything and build up again as smoke clears" philosophy. It was printed in thick letters at the very back of the checklist (QRH) where it could be easily found and began with the words "consider immediate diversion" or similar.
The MD-80 fleet got sold and the lessons learned were rather filtered as they reached the rest of the fleet.