Well as a Pilot that has managed to fly all over the globe in narrow and wide body types for 25 years and
NEVER ONCE tried to land on the wrong Airport I can honestly give my opinion and say the Pilots AND SWA were negligent by not making use of all available tools at their disposal to safely conduct the flight to the correct destination. A to B is all they had to do, nothing more nothing less.
The tools are available to use in the cockpit nicely fitted by Boeing.
You're saying they probably did update the FMC, use the ND as per SWA SOP's? Well if they did how could they miss their destination by 7 bloody miles?????? What.............they thought it map shift or something????
So you can make all the BS excuses you want but if the truth hurts then so be it.
Oh and it wouldn't be just SWA, I would say the same thing about a similar error if it were to occur in my company.
Fortunately no one was hurt and the Aircraft returned to service ok. Let's just all learn from their mistake and make sure we all have strategies in place to prevent it happening to us.