I think one of the most telling things about the press, and Democrats in general, is that they have such a problem with Bush's faith because they know it's genuine. They had no problem with Clinton strutting out of church with a Bible big enough to shade a small child under his arm, because they knew it was just fake stuff for the rubes. Dittos with Kerry suddenly popping up quoting Scripture all over the place. They knew both these guys were lying to get elected, and they have no problem with fake faith, but can't stand the genuine article.
My theory is that a lot of them believe that all faith is fake. They dislike Bush because he acts on his faith, particularly tenets of his faith that contradict their "lifestyles."