Erasing the Magic Crest wasn't just Fang Zheng's impulsive thought but a decision made after thorough consideration.
Because the Magic Crest itself is a shackle for magicians.
This becomes clear with Fiore and Haine. They don't want to inherit the Magic Crest, yet they have no choice. In ancient times, choices were limited, but in modern society, people have more options and are less tied to the past. Fiore, for example, prefers to explore different worlds, and Haine would simply leave if not for his sister's health condition.
There are quite a few magicians like this; not just the new-age magicians, but also many inheritors from prestigious families have similar thoughts.
Essentially, it's like inheriting a century-old store. I don't want to inherit my family's old shop; I'd rather learn painting or play music. But the world for magicians is much darker and crueler.
