Everyone understands this. It was a joke. It is funny to propose that the commenter hopes that people will get together and go "wow, thank god that asshole has

Everyone understands this. It was a joke. It is funny to propose that the commenter hopes that people will get together and go "wow, thank god that asshole has finally kicked the bucket" and this proposition is made possible by the fortunate coincidence that "get together and celebrate when I die" can, divorced from context, be interpreted in either the intended way or the funny way.