Where I'm from, ghosts and the dead aren't simply ignored. They're not there.

[Maybe things were different where she was from! Did spirits live alongside people all the time, taking their drinks and leaving smoking ruins on the countertops?

... Other worlds are far more interesting than his own.]

That doesn't sound like the dead to me. Disembodied perhaps, in the case of shinki given how malleable you are to your gods' wills.. but dead? I'm not sure I believe that. It doesn't match up with what we can observe!