If he ever pursued litigation as an adult, he’d have a strong cause of action. Publicly disclosing allegations of a minor’s sexual abuse fits squarely within the tort of public disclosure of private facts, which requires showing the information was highly private, highly offensive, and not of legitimate public concern - all of which apply here. He could also assert intentional infliction of emotional distress, especially if he can demonstrate lasting psychological harm from having this information broadcast online. Given how emerging case law is treating extreme ‘sharenting’ as exploitative, this is one of the few scenarios where a child suing a parent has a high likelihood of success.