They are baiting the press so they can exclude the press from the white house. The press is correct to respond with truth in the face of untruth, however, they also need to plan to be cut out of the white house press corps. Why would Trump do it? So he can fill the room with press that will cheer his every word and he can then do his thing unabated.
How will that effect the presidency?
Isolation breeds bad things. Even when it is intentionally done. Actually, especially then.