This essentially is in line with what was stated in the Quran almost 1,500 years ago.
"By heaven furnished with paths;" (51:7)
The Arabic word "alhubuki," translated as "furnished with paths" in verse 51:7, comes from the verb "hubeke," meaning "to weave closely, to knit, to bind together."
The Quran states that there's 7 layers/dimensions of the Universe. We reside in the first one, essentially meaning the 3rd dimension, and there's six more superimposed above us (plus time?, which would make it 10 total).
The Jinn reside in the layer just above ours, or "the 4th dimension". They live here on Earth with us, however we're unable to see them, because they're located in a different dimension. Occasionally, it is said that Jinn have the ability to travel down to the 3rd dimension and be seen by humans.
As far as the universe being 2d and just a hologram:
"The Day that We roll up the heavens like a scroll rolled up for books (completed)... (The Noble Quran, 21:104)"
which is in line with the Cosmic/Big Crunch theory, hypothesizing that the Universe will eventually end by collapsing or folding onto itself. Also, the heavens being rolled up like a scroll would support the 2d hypothesis
Know that the life of this world is but amusement and diversion and adornment and boasting to one another and competition in increase of wealth and children - like the example of a rain whose [resulting] plant growth pleases the tillers; then it dries and you see it turned yellow; then it becomes [scattered] debris. And in the Hereafter is severe punishment and forgiveness from Allah and approval. And what is the worldly life except the enjoyment of delusion. (57:20)