What would this observer outside of space/time observe? Remember it has no 'time.' If it sees all events concurrently would that be meaningful? Wouldn't that be the same as nothing happening at all?
The Truth is in God's Name, I AM.
He is the Creator ex nihilo.
That is the key to understanding what we are saying.
Space, time, physical causality, physical laws, logic, information, etc. are part of the Creation, they are not properties of the Creator.
Since the observer outside of space/time would be observing all that there is, I would not imagine that it would be the same as nothing at all. I would imagine it as being everything-at-all within space/time.
If a 2 dimensional man cannot see a 3 dimensional man, that does not imply the reverse. And it also suggests that the 3 dimension man sees so much more.
But, we make a terrible mistake if we imagine the one outside space/time as being human-like in abilities and perceptions. Just the discussion itself should have disavowed us of that notion.
That would surely seem to be the case with a finite observer located within the fabric of space and time. A finite mind by its own resources probably would never be able to make any sense of an observation of completely simultaneous totality. (But then, show me a human observer who has ever had such an experience. There have been a few in human history; but they are very few and far in between indeed. In the past, they were called prophets and saints.)
Yet to an infinite Mind, this would pose no difficulty whatsoever.