It would be fine if he was a Child of the Elements or other highly talented people. His cultivation speed would not be too slow. For example, Levi's Earth Meditation Art and Sun Meditation Art cultivation speed were not bad.
However, if he was a Child of Chaos, he basically had no chance of becoming an official wizard. His talent was not good to begin with, and he did not take drugs. How could he become an official wizard?
It was just like playing games. He was unlucky to begin with. If he didn't spend money, what was the point of playing?
Levi's Deep Sea Meditation Art was an example. This Meditation Art was clearly the first to be learned, but it was overtaken by the Earth Meditation Art later on. Until now, it had yet to reach level 3.
This made Levi realize how painful it was to not be able to take pills without talent.
If he could refine the Sandman Potion, his wizard cultivation speed would rise to another level in the future.