It's one thing to describe the experiences of soldiers returning from Vietnam, because that is valuable information. It's another to interpret it and make conclusions when there are 50 other valid explanations.
"People/men like war/aggression/risk" is honestly not a new concept, and it's seems pretty correct on the surface, especially when you cut out the whole part of your comrade slowly dying due to a stray shell. This is the glorification of war that books like Catch-22 and Slaughterhouse Five were written against.
Most incorrect claims are dangerous, and the reasons are not always all enumerable since you often can't see the problem when you think a false thing is true. I.e., if you already think women are hysterical, treating them as hysterical doesn't seem like an issue because, well, they're hysterical.
