It’s covered in Jerwin’s comment above. It seems more a thing of the past that all squash grown on a vine was called pumpkin. Winter squash we now call them because they store well. I guess your example shows the transition, with the old name holding on for some.
Most pumpkins here are left to rot on the porch after being used for a night as a jack-o-lantern on Halloween (I exaggerate, but only the rotting on the porch part.) Pumpkin Pie is something you buy in the store. Eating pumpkin almost never happens, but it probably would be baked with a ton of butter added at the end. I’m growing a bunch now. So will be experimenting soon.
