If someone is sensitive about something (their looks, their brains) it's not kind to point to that t
If someone is sensitive about something (their looks, their brains) it's not kind to point to that thing and say: yes that's bad. You are, in fact, quite ugly. You are, in fact, quite dumb.
Similarly, though, it is also not kind to compliment that person in a way that you both know contradicts the truth. If someone was just rejected and implicit in the story is fear that they lost out because of their looks, it's not kind to call them "beautiful" or "handsome."
And yet you see this online all the time. People show a little vulnerability and people respond with false affirmations and everyone applauds. We don't want anyone to feel dumb. We don't want anyone to feel ugly. We make false affirmations for the crowd, not for the person being vulnerable.