I was thinking this too; a large part of the original bitcoin paper is complaining about how centralized authorities like banks are problematic. I don't really see how adding another central authority makes any sense.
According to the article at least the purpose is to increase the speed of transactions that the bank settles internally.
I can't speak to how feasible this is because I'm not familiar with the tech, but I don't think anyone needs to adopt the politics of the original paper if they have found some other use.
