@Ravielsk But that's not the point of Old Yharnam. Old Yharnam was a memorial of Church of Blood past crimes against humanity. It was first district which citizens were treated by the Old Blood and when it turned out Ouchi Fauchi do not work as they said, where beast holocaust took place. Later abondoned and locked, those entities that survived were left on their own without any help(blood) or compassion(elimination). The last boss is symbolic in that context, it's a Blood Starved Beast at the dephs of this god forsaken place.
That is quite literary true of the entirety of Yharnam. The whole city is overrun specifically because everyone was using the blood. The Old Yharnam is simply the first place where it reached a critical point but that is entirely besides the point.
My entire point hinges on the fact that Djura for some reason feels the need to inform the player, explicitly and with
bated breath of a fact that at this point in the timeline is public knowledge. He is the center piece of the whole area screaming at you from a tower right as you enter but then once you get to him he essentially shares with you the equivalent of "did you know steam used to be water". Which is just incredibly silly unless you assume that he was literary camping that one spot for... well we do not have a timeline but its safe to assume that it would have to be at least several years for him to be so detached from the rest of the world to think he is dropping some truth bomb on you.
But then when you take into consideration the original opening of the game where you were not told jack about the nature of the hunt and were actually chasing after your
friend Laurence and were actually looking to learn more about blood ministration it all starts to make sense. In the context of that opening Djura is actually revealing to you something you did not necessarily know.