I think he was involved in like a car accident that left him with the equivalent of not being right because of being kicked in the head by a horse.

From what I understand, he does not really understand what is going on. Head injuries are tough. They can affect different people differently and have huge changes in personality or ability to understand things.

I do not know the details of this and I’m not taking a side on it, just that he is known to have severe brain damage and should be treated like any other challenged person.