He says they really tell his wife that he ought to try harder to "fit in."
I think he ought to have a long conversation with the wife about what it really means to be the head of the household. Ask where the elder relationship fits in there?
One of the great treats of a marriage is to have someone at your side who will take your side come thick and thin. Together, they can weather life's storms. Apart, they might as well have the elders sleeping in the Master Bedroom with them.