I mean, yeah he’s incompetent. He doesn’t know his worth, despite having the ability to beat his boss to death while using no magic. Despite being able to out-ability everyone he knows.
Le sigh.
P2: TL note is wrong. Mou man tai isn’t “take it easy” in canto, it’s “no problem”. “Mou” being no, “man tai” being “problem” or, by itself, “question”.
https://en.wiktionary.org/wiki/%E5%86%87%E5%95%8F%E9%A1%8C