This guy is deranged.
He’s unfit to be around children. After all, isn’t it insensitive of him to “teach” children? Who does he think he is? It’s only fair that the adults and children share their experiences in an inclusive and fair environment, not one that encourages him to exploit his age privilege.
He needs intensive training that focuses on systematic ageism. He needs to engage in Courageous Conversation with these age disadvantaged children. What kind of hate filled monster is this adult calling himself “teacher”