Original sentence: MWI's main conclusion is that the universe (or multiverse in this context) is composed of a quantum superposition of very many, possibly  infinitely many, increasingly divergent, non-communicating parallel universes or quantum worlds
Edited sentence: MWI's main conclusion is that the universe (or multiverse in this context) is composed of a quantum superposition of very many, possibly  even a non-denumerablely infinitely many, increasingly divergent, non-communicating parallel universes or quantum worlds