He admitted himself that they are great people, and the fact they are behaving so strangely to him indicates to me that there is some other dynamic going on tha

He admitted himself that they are great people, and the fact they are behaving so strangely to him indicates to me that there is some other dynamic going on that we don't have an explanation for. An obvious possible explanation is the fact that a lot of otherwise-good people have a hard time believing in illnesses they can't see. Ask anybody with an "invisible" malady and they'll tell you that some depressingly large percentage of the people they care about don't believe they're actually sick.