".....

0 hours of 121 time could be a good thing. SWA probably has a way they like to fly and by having no previous 121 time they don't have to make guys unlearn bad habits they learned elsewhere.

...."

0 hours of 121 time is not a good thing. A lot of hours flying rich people around the world is not a good thing either. Hours flying paying passengers from point a to point b part 121 is very good; if you want to fly for an airline.