Reading the Book of Mishlei, I surprisingly stumbled upon an apparent answer to my question.
In Mishlei 9:7 we read:
He who chastens a scorner takes disgrace for himself, and he who
reproves a wicked man, that is his blemish.
and he who reproves a wicked man, that is his blemish: It is a blemish to the one who reproves [him], for ...