Nonsense.  Spicer can ignore whomever he wants at the briefings and he does not have to justify his choices to anyone.  With regard to the media in question, they may mainstream in that collectively they are the mass news media that influence a very large number of Americans, including many who cannot think for themselves.   Reporters and journalists should report news, but that is not what many of them do.  They instead act more like referees for a sporting event, calling the shots for one side or the other based on their personal feelings, biases, political leanings and agendas.  You have to be hearing impaired, sight impaired and mentally impaired to not see this.