It's not that they can't be completely and utterly extant, I just feel personally that they are, essentially, all different masks for the same thing.
It's hard for me to describe this since a lot of it is dialogue within my head, but I see things and ideas as having levels of reality to me. The computer that I am currently typing on is very real. Draugnar, bartdogg42, CA, etc...they're not quite as real because while I believe you are all people, for all I know in fact you could be the same person, or random scriptbots. The overwhelming evidence that I perceive is that you are real people, but you're still not quite as real to me as this computer. So there's levels of reality to me, or how real I perceive any individual thing to be based on how much I personally associate with it.
I see this "godly gestalt" as being real enough that I fully endorse anyone believing in any individual part of it because I believe that's how they perceive it. I don't feel that it's real enough that every bit of it can exist simultaneously and with the same degree of reality. Although I do believe a person can believe in other parts of it as being sub-parts of their main belief...like Saint Nick as a sub-part of belief in Jesus or Apollo being a sub-part of belief in Zeus.