It's interesting that this Dawson, a "relationship coach," has nothing to say about right or wrong, only "how you feel about yourself." Even in talking about children, he doesn't emphasize how they feel about their parents betraying the family, only how their "reaction" might make the cheating spouse feel.
Psycho-blather.
No, his approach doesn't take a moral view point on it, which means that anybody hostile to anything with religious overtones isn't going to reject it out of hand.
While Dawson himself doesn't take a moral viewpoint, he is clear enough about the fact that everyone in the cheater's life WILL have a moral viewpoint to take on the matter.
Effective, I think.