Maybe Joseph has Asperger syndrome. Most people don’t have it–and they all like talking about things ‘most people’ like to talk about.
Unlike Joseph, who uses a one-sided, long-winded speech about a favorite topic, while misunderstanding or not recognizing the listener’s feelings or reactions, such as a need for privacy or haste to leave.
So instead of all ganging up to bully him-why don’t you understand him.