Because that makes the problem go away. In the end what do they really want from this? By and large they probably want the drama to end so they can get back to their quieter closer to normal hit cable TV show celebrity life. And the path to getting that back is to stop talking. PR controversies are kind of like divorces, you can’t win them, you can only survive them, and the people that have the hardest time surviving them are the ones that try to win them.
Does it make the issue go away? No way.