Just because something is popular doesn't make it anymore plausible than if it weren't popular. Popularity does not have anything to do with Probability. There is a difference between infinite and unlimited, an unlimited amount of universes is not logically impossible because if you had unlimited cookies, that doesn't mean that an infinite amount of cookies existed at any instant in time. Being all powerful is just having complete power and is not an infinite quantity of any kind. However, many arguments prove the fact that an infinite quantity of real things is logically impossible, due to the contradictions it leads to. Abstract objects like numbers aren't actually real, they are thoughts within the mind, and that's why there can be infinite numbers.
This is why there cannot be an infinite amount of universes existing, BUT, there are infinite POSSIBLE universes. If it's a possible universe, then it could possibly exist, and we have no reason to believe that it doesn't.