Yes, I know his positions on this. I just don't want to go anywhere that requires me to assume these things about this situation. Frankly, I think it is quite possible that his wife made the decision. As a woman, I would find it very hard to live with a public person, or a person so obsessed with having the latest technological gadget. Sexuality is not always the issue for incompatibility -- actually, the most common issue is money. If people don't have the same spending priorities, that's a very hard one to resolve.
I don't know what Mr. Prager's wife does, but I would think, in today's society, that different professional career paths can lead to incompatibility.
Maybe his wife did decide. However, if Dennis was very against that, maybe he would use his bully pulpit to show at least a LITTLE discomfort with the situation, even subliminally. So I don't think she decided. Dennis would not have been BEGGING for such supportive calls on how divorce is not that bad for kids. He might have taken more of the opposite calls - even if he had promised his wife not to rag her on the air for leaving him against his will, nothing could stop him from having "callers" talk about the ill effects of divorce on children.