I addressed those arguments in my last large reply.
I don't see how it is. It literally means dreams are folded inside larger dreams, and these are universes. It's explicitly stating each universe is viewed as a dream by a larger universe, and that larger universe itself is a dream to an even larger universe. It's a very blatant scan.
The issue with that scan is that it's ancient(I believe around 1968) and came before it was revealed universes cannot exist within atoms(that is, when the misconception was prevalent)
So Dormammu couldn't have been referring to the Microverse(also the fact he said "worlds within worlds" and not "a world within a world"). The Microverse being parallel is not debatable.
Guidebook confirmation-
Not just that, but before Dormammu said that, it was revealed that the Microverse existed outside the entire Multiverse, and it explicitly mentions the Microverse being different from the equiverse-