I love how the articles say "Southwest, with their rock bottom fares and no-frill service" It amazes me that people still think of WN this way. Give credit to Southwest for great marketing.
As the article later points out so well, their fares really aren't that good. They can be cheaper at times, but often they are more expensive. And with the recent race to the bottom for all air carriers, their service is in line with most carriers.