Why?
Geist is the counterpart to Wraith and Mummy (sorta)
Wraith was grim and gritty to the point of having an actual Angst stat.
Geist on the other hand is built off of Carnival and El Día de los Muertos. You've died and come back - so eat, drink, and be merry, for you've already seen beyond! Why worry about stress when you're so alive? Sure, it's about death, but it's about celebration too - less woe is me wangst, more audacious jazz funeral. The opening fiction is titled "Rum is the Drink the Dead Like Best" That's not to say the game doesn't have horror - just look at the arbiters and law enforces of the Underworld, the Kerberoi, and their Lovecraft-mixed-with-Clive-Barker feel.