Multiple methods existed before Noah as he could choose any of them to achieve the goal of taking the Dark Universe and have it begin forming Universal Filaments!
The [Universal Budding] method would require him to sacrifice one of the newly made Universes within his Origin as he could do this...but why do such a thing when there was a perfectly situated Primordial Cosmos before him?
A Cosmos filled with Universes that were just affected by the Universal Amalgamation and were currently empty...a Cosmos that had a myriad of other Universes filled with countless Quintillions of creatures!
At this moment, Noah had turned his eyes towards this Cosmos as he had already begun the preparations.