It probably has to do with the identity of the corpses. In DWRP, we tend to have a "hands off" approach to what happens to dropped characters, even if a game's ending, so a modteam turning those dropped characters into actual corpses littering a beach can be seen as fairly audacious.

Is it all grimdark and edgelord? Sure, but at least it's a different kind from the typical torture porn edginess DWRP usually has. It at least did something different.