Students are not fools. They were, after all, once young children who if they reached too close to an open flame might well have gotten a smack on the hand, or a scary lecture about the dangers of third degree burns (skin grafts, my child, unimaginable pain) and never did it again. Decades later they too often apply those same lessons to writing: red ink = bad. Do not do that again. Which, in turn, risks molding a young writer into someone who forsakes creativity into someone whose core skill is avoiding pain.
Writerland Chapter 79: Don’t Be So Mean by Michael Shapiro
Emphasis mine.