Frankly it’s the similar ass backwards logic that says men are always the agressors or that women can never abuse/rape a man. It’s this idea that one demographic group by virtue of being in that demographic can never do wrong. Which is…really…fucked up, to be honest. It’s how really heinous abuse goes unreported – because the victim is seen as incapable of being a victim by virtue of their mere being (with contrast to their abuser). Hell, why you think clergymen in many religions get away with illicit sex? Because we socially want to believe that by virtue of the profession or vocation they would NEVER, would somehow be UNABLE to. It’s dangerous thinking to presume some group is inherently predisposed to be an abuser or to be abused (exclusively, no overlap!) by virtue of age, race, gender, sexuality, profession, etc. That’s how you get abusers flying under the radar.
Sorry but a child cannot abuse or rape an adult. That is literally an excuse used by child abusers and rapists to justify harming their victims. Also, having a mental illness/being neurodivergent, being a survivor of trauma, or being disabled doesn’t justify abusing or raping minors (Or anyone else for that matter).