The contempt that certain people have for a school shooting survivor is really something
Why should that give him special immunity?
In Texas, there was a state legislator named Suzanna Gratia Hupp who was a mass shooting survivor. In her case, she was convinced that if she had been allowed to have a gun with her, she would have been able to stop it from happening, so she spent years in Republican politics opposing any and all firearm restrictions.
If she was allowed to do that without your criticism, why shouldn't he?
Did she ever suggest that nobody was allowed to criticize or disagree with her because of her status as a shooting survivor?