Hollywood loves to pretend casting is all instinct and vision, right up until the stories start coming out. Then you find out some actors were passed over for being too short, too skinny, too ethnic, or simply not the kind of man a studio wanted on the poster.
What makes these stories stick is how naked the logic sounds once the careers are already made. Before they were stars, plenty of famous actors got hit with rejection notes that now look less like insight and more like the industry embarrassing itself.