I would think it was because he didn’t have a ‘D next to his name, and was not a member of a “protected class.”
It is for the same reason that John Green’s interviews have not made any front pages. He does not blame, he is not hysterical, he is reasonable and has said that he does not want this shooting used to take away more rights of citizens. Had he come out swinging about gun control he would be the media darling!