Being from Maine, whoopie pies are HUGE here and always have been.
I make vegan whoopie pies (they are VERY sticky and gooey, just how the people want them...) Personally, I think they are messy.
That said, I am SICK of making them... I had to make some tonight for a store... they are just so borring and time consuming...
Maybe I'm just after the photo "trophy" because I would rather make a decorated cake. With a cake there is a "beginning, middle and end", but Whoopie pies just go on, and on....

How the world still dearly loves two cakes with frosting SMASHED between them...
