Speaking of those who cannot cultivate yet actively embrace this system—the first group that must be mentioned is undoubtedly the people of Earth.
Earthlings have developed an entire, comprehensive system and set of regulations around Otherworld magic. Yet, ironically, Earthlings cannot cultivate at all.
Not only are they unable to, but the magic of the Otherworld constantly corrodes their bodies. Once the erosion reaches their internal organs, even an immortal deity couldn't save them.
The saying "social existence determines social consciousness" holds true here: growing up in the Otherworld, exposed to the concept of magic from an early age, whether an Earthling or an Otherworlder, it is only natural to attempt to harness this power—it's beyond reproach.
To enforce a ban preventing Otherworlders from learning to wield magic in the name of Earth's modern civilization would be foolish. It would ignore objective reality.
