Earlier quoted context omitted.
I would much rather live in a world where people question biased media narratives and we risk hurting someone's feelings than the other way around. If this kid can't handle a little bit of criticism, he won't be long for the engineering discipline.
That's a false dichotomy > If this kid can't handle a little bit of criticism I do expect adults - over 25 - to take the rough with the smooth. But children are not adults. I think you're assuming your own competence at pedagogy. I would want to shield children from you until they've developed the resilience you demand from them. Also, the emotional tone - sheesh
Giving and getting feedback is hard. It's a skill and it doesn't come easily to most. Sometimes hurting someone's feelings is inevitable, but starting from a place of "toughen up buttercup" is really self-serving and counterproductive.
There is always someone better than you, and always someone worse. Always someone who knows something you don't, and always someone who can learn from you.