Is the husband worried the child is smarter than he?
Many folks woild love to raise a child with needs because they can’t have children. That father is a scumbag. (And per my comment above, kids witn ds are often smart- one girl basical,y taught herself to read just by listening and following along in the books, noting i guess what sohnds went with which letters, and one day her parents came in and she was teaching her younger sister, to the astonishment of her parents) the father on the other hand sounds like a moron)