Yes..I agree that 'we don't know'.
But the idea of a God (not a biblical God) or Universal Consciousness is no longer just a part of mythology or religious belief, to be casually laughed away.
These ideas can be a part of serious scientific speculation and conjecture.
There have been endless speculations about consciousness and, apart from the hard neuroscience, they are all basically guesswork.
Even scientists I admire for other reasons have come up with some rather strange speculations. Take Roger Penrose (who's published joint papers with Stephen Hawking), for example, who basically tried to turn consciousness causes (wave function) collapse on its head and suggested that collapse causes consciousness and hence introduced a kind of panpsychism. His book,
The Emperor's New Mind has a great introduction to a lot of scientific concepts (highly recommended for that at least, but not for the maths-phobic). He tried to argue that minds were not computable, using Gödel's incompleteness theorem, but I found it ultimately unconvincing (as did most of his peers), and the leap to QM was obviously a guess (as many of his critics pointed out, he seemed to have seen two mysteries and just assumed a link).
The speculations in the video (black holes linked together) seemed to have no basis at all.
A guess is a guess, and we do need people who come up with bold conjectures, but they are only as convincing as the arguments used to support them and they can't become scientific hypotheses until they make testable predictions (at least in principle).
The big problem with a
universal consciousness or some "god-like" being is the total lack of evidence of any conscious involvement (as the video pointed out) in how the universe has developed. Together with the fact that it doesn't
really explain the universe or the "fine tuning" at all, it just moves the "problem" elsewhere.
When it actually comes down to it the only
evidence we have of consciousness is when it's associated with complex brains, which is why I find the speculations of Daniel Dennett (
Consciousness Explained,
From Bacteria to Bach and Back), Douglas Hofstadter (
Gödel, Escher, Bach,
I Am a Strange Loop), and possibly, from what I've read to date, Integrated Information Theory, to be more plausible.