One pupil got suspended for drawing horns or something on a photo of a school principal. It's the same category of offence. People should grow thicker not thinner skin. But being a victim in modern world pays because outrage sells.
Also we really can’t ignore the lack of consent and the abhorrent violation of someone's image. This can’t be boiled down to growing “thicker skin” - there’s pretty major ethical considerations as well as the potential harm it can cause to a person's reputation and mental well-being.
That.
It's not something that's actually being done to them, unlike say, a snearing comment.