Virtually all journalists work for the same system POTUS is headlining, why would he kill his own henchmen? Those rare cases where some don't are handled much better by censorship and deplatforming. Why kill someone if you can make it so virtually nobody would listen to him anyway and all "respectable" news outlets would declare he is insane and likely is working for the enemy, whatever that is today? Killing the story is much easier and much more efficient, and has been done many times.