Clearly a serious incident but clearly not the first crew to have done it. Quite a few US airports have multiple parallel runways and wide taxiways that can be confused (Las Vegas springs to mind). Confirmation bias of seeing only 1 lit runway to the left. Not all runways have approach lights and centreline lights so a taxiway can look a bit like a runway. The ILS probably wouldn't be tuned as think it's an RNAV type approach.
In some ways I find it harder in daylight into a setting sun to distinguish runways and taxiways, especially as the lights are hard to see then. San Diego has a centre stripe down the middle of the runway which is a different texture which makes it look like a taxiway until you see it has another section either side.
The newest Boeings have RAAS which tells you what you're lined up with on final approach and would warn you if lined up with a taxiway, so technology is catching up.