Kind of like writing Hitler about improving fire protection after the Reichstag fire in 1933. The Reichstag fire was used by the Nazis as a pretext to suspended most civil liberties in Germany and to ban publications not considered “friendly” to the Nazi cause.
Fritz Thyssen (steel maker) wrote Hitler a critical letter about his arms buildup. Hitler was going around lying, saying that he would not start a war.
Thyseen spent the war in a camp.