Hey yeah I did create that mod.
It's removed from modDB atm.
The mod was made for the pumpkin event on the discord, if the servers where full I would have launched some servers with that mod installed.
This wasn't needed and they took a whole different approach with that adventure map.
The mod added Pumpkins to worldgen (containing chiseled ones from players randomly spread around the map.)
And the drifters had pumpkins added to their loottables.
Pumpkins stacksize was increased to 99