As a former pilot (No longer have the paper) this is scary and I have a feeling this was pilot error. I agree with his take about backing up night visual approaches (hell, even daytime approaches) with instrument landing setup. He makes a point at the end that having instruments on can keep you from landing on the wrong parallel. Almost sounds like this pilot was fighting fatigue, however I'll reserve judgement until the NTSB/FAA finishes investigating.
Also, I've heard Southwest pilots love landing not necessarily on the most active runways (here in Tulsa they typically land airliners on the 10000 foot n/s 36R/18L), but the ones that will get them to the terminal the fastest. Now here, that is typically 18L in the summer, but if TIA is in north ops (landing to the north), if the crosswind component isn't too bad, I've heard alot of SWA pilots ask for the crosswind runway (8/26) if it's not closed. It's an easy turnoff just north of the gate area.