It makes sense to remove the translation if there is a better one around.
Also bullying? With art or writing there is always the worry "maybe I don't have any talent". The process to get good for either is also vague. Constantly writing or drawing is main way.
With English, almost anyone can learn it with effort. The process to get better is also well defined.
It is ridiculous to treat them as equivalent.
If he was writing in a forum and someone told him to stop writing posting because of his bad English than I'd kind of get it. But this is differentl.