I see his actions and decisions as professional photo-journalism, and see the entire fabulous confection of misinformation, decoration, confusion, blame, and apparently outright lies as a classic coverup of misinformation - once the fable is public, all involved either have to go along, or to contradict it: “When the legend becomes fact, print the legend.”
Does Capa share blame? Of course. But so do a dozen or more others who embellished, invented, and went along with the story. Should he have stayed on the beach, or with the command group and gotten more shots? Not if he wanted to get the shots he went for published on deadline.