Now, consciousness and thoughts we all know about since we have them and, obviously (in theory at least), a mind that was
powerful and creative enough could "think" about a universe as vast as ours.
(I can just about hold together a constant image of, say a house, with a few people walking about in it so God's definitely more powerful and creative than me!

)
Either way, there are
no unknown entities being multiplied here. Minds are known to us.
Now, speculation about non-conscious "stuff"....
As well as being something to which we have absolutely nothing at all to compare, this "stuff" has to have the ability to be very many things like spacetime, gravity, electromagnetism, the weak and strong forces, both a particle and a wave
and it has to have the ability to become self-aware when it's organised in a certain way that we would define as information processing.
Except, there's a
big problem here. Information processing is a value statement made by conscious minds. Information processing is a label that conscious minds apply to closed physical reactions
when said closed physical reactions provide us with data that we collect and consciously interpret or find useful somehow.
So, even if we ignore the problem of how an information processing system consciously values it's information processing as conscious processiong before it's even conscious in the first place, I think we can safely see how the endless list of exotic properties this non-conscious "stuff" requires to account for the Universe and the existence of consciousness within the Universe is
a rather considerable multiplication of unknowns to the
nth degree!
The idea this is somehow more parsimonious than God (a conscious mind) clearly has a few problems.
~
HypnoPsi