i agree with both the sides presented here abt how it can damage or can encourage change. I think a big differentiation is between shaming, labeling and teasing. They arent neccesarily the same thing, and teasing is often not meant in a painful way, like for a sibling to tease a 2 yo sibling for mispronouncing a word. Even that kind can be damaging but doesnt have to be.
Yes, i’ve been affected by teasing. One biggie- after being told in kindergarten that a particular answer i gave not just was wrong, but made absolutely no sense, and got laughed at by the teacher, i stopped making guesses for answers in class. After being laughed down in third grade in the first week of school, i stopped raising my hand in class. Unless i was completely lost or 100% sure of an answer, i never asked questions, offered answers, suggested insights. Turned out, both times i asked my parents when i got home, and had been correct, too.
In high school, i tried working on myself, but after being laughed at by the teacher for my answer on ‘what is the question on this pasuk’, i stopped again for good. From myself, i know lo habayshan lomed is true, but it wasnt enough to motivate me to speak up in class again, not through high school and not in sem.