The reasons the Immortal Alliance banned the Nascent Soul Method were indeed numerous.
The greatest flaw of the Nascent Soul Method was that it was "not environmentally friendly."
Of course, there was another reason. This cultivation method would fundamentally dismantle a cultivator's social nature, causing them to automatically sever themselves from their former kinship ties and civilization.
This had also been one of the Celestial Great Saint's intentions in designing it. The Celestial Great Saint's original goal had been for all living beings in the universe to coexist without barriers. If existing civilizations and cultures would negatively affect that goal, then naturally they ought to be dissolved.
It was like how, on Earth, ancient clan systems and family structures had negatively affected industrialization, and so the power of industry would destroy them.
The Celestial Great Saint had merely placed that process on the scale of the "universe."
The civilizations of this universe generally had rather weak cultural cohesion, and were more willing to accept foreign cultures.
Things as stubbornly antiquated as the Yu Clan were truly rare to the extreme—and they were still a laboratory product. Under natural conditions, they might never have been born at all.
But Wang Qi also knew that, actually...
The God Method did not really have much persuasive power in this regard.
This differed from the revised Nascent Soul Method passed down by the Farmers among the Celestial Favored Clan, which produced the effect of "Preaching Immortals." The Nascent Soul Method's inherent nature of "dismantling social bonds" was by no means brainwashing. Rather, like the Industrial Revolution breeding a world where man ate man, it drove people through the economic foundations at the bottom of society.
After cultivating the Nascent Soul Method, one no longer needed something like "civilization."
The source of humanity's cohesion was