To be fair, it isn’t aware of what source it’s using. It’s not “referencing” anything in particular. It’s just trained to replicate a bunch of data. It doesn’t understand it or anything. It doesn’t know what came from one source and what came from another, and how accurate any of those are, or what the context of it is. It just generates something that resembles it’s data based on the input.
There is no “center of the universe” as far as we’re aware I’m pretty confident. We (each individual) is the center of their known/knowable universe, but that’s distinct from the actual universe. There’s stuff beyond that that we can and will never observe.
I guess you could define the center of the universe as the average point of all matter, but since we can’t observe much of the universe we can’t know where that is.