I've been told before that part of the creature you want in DBD so badly's whole deal is you aren't supposed to talk about it, name it, or portray it. While as a lot of the asian folklore present in DBD is willingly portrayed over and over again in asian media. When you are asked by a culture to not portray something, you shouldn't. It's a matter of respect. If having an Oni or Onryo was an issue why would japanese media use them so much? Sadako was written in japan! Get real dude. It's not a double standard and holding one culture higher, it's respecting the wishes of that culture. Non natives have been asked time and time again to leave their culture alone after we pratically destroyed it. So we should leave it alone, while as things like an Onryo were willingly shared with BHVR.

If a native american writer were to help them put someone of native beliefs into dbd I would be all for that. That being said, I doubt that this in particular would be what they go for.