Yea I've seen that one before! I wish it was a bit more clear (like most WoBs lol). When I read that I feel like Brandon is talking about Odium the Vessel not Odium the Shard. Most of the research and reading I've done on Rayse says that he is really ambitious and wants to be the only god. So I think the Intent of Oduim being the only Shard is more because of Rayse and less with the Shard.
I just a gut feel like now things might have changed, ya know?