Never said that. But it's obvious that Duncan goes out of his way to subvert the organization with unnecessary drama that could have otherwise been handled in-house.
I'm not saying he doesn't have a right to do it and I'm not questioning that he's a "fan" of the team just because he wrote a book. I'm just engaging in the free and open discourse the same way as he is and choosing not to be a consumer of his content and voicing caution to those that wish to do so.