Bust the Dust Kit are the kind of reason why I have yet any DLC

To me it's not really funny or silly. It's trying hard to be silly. Like the whole game's animations just seem childish. The Sims 1 and 2 were highly satirical which made them so funny.
The bunnies and spirits on the other hand just seem childish and made to be cutesy so they can attract this 18-25 female target group, which works really well it seems. It's all like very cute, baby-ish imo, when in the previous games it was social satire.