Darkseid not having alternate counter parts is dumb

[Castiel]

So there is supposedly only one Darkseid but that is dumb when you think about it. For example Darkfather from the Dark Multiverse proves this to be false. Darkfather is a Batman who defeated his Darkseid and took his power. This alone proves other Darkseids can exist. As another Darkseid had to exist and Batman taking his power became another Darkseid. I just don't get the absurd need to say there is one when there are clearly more only thing I can figure is the alternates are unaware of each other's existence. There was even a Darkseid Superman(he had no lines) who fought in Barbatos's army