Because he needs a lot of evidence to show the dolts exactly what the elites have done to this country and any one who stands in their way. They shot Kennedy, then his brother, shot Reagan, and then killed JFK Jr. Trump is holding the classified JFK files until he is about to "leave" office. He needs several avenues of proof to show the American people how dirty the elites were. JFK assassination files is one avenue. Election fraud is another. Big tech, one more. on and on it goes. The dumbed down population might not believe all avenue of proof, but they might chew on one or two avenues.