from my own experience, I've found it actually depends more on the players involved. You'll see some players call it deadland and some call it graveyard
I assume it has to do with the origins of both murdergame genres. Before it became really common for people to make their own murdergames, there were basically two groups of mods making them - the DRRP team, who did mass ex presumably used 'deadland,' and the Murder Manor/spinoffs team, who did scapegoat and used 'graveyard' because at first they did mafia
I don't really know how 'deadland' originated but I figured since it's a mass ex thing then it could probably be traced back to DRRP. Correct me if I'm wrong though lmao
Like maybe it was actually Airlocked since they very clearly had a 'survivorland' as well, so I can see how deadland would come about as a counterpart...
Man I had no idea that pricons were a reason to not have afterparties. Taking notes. I legitimately just thought it was an arbitrary individual difference because I've definitely seen a few characters straight up weirded out by the concept.
though my memory is pretty bad