Your reasoning was wrong. Just because a picture of Mr. Incredible or the robot has them on Nomanisan island does not count in the gallery. With things like locations we only put up images that are more focused on the settings. Things like a bird's eye view of Central Park or a camera view of the Golden Gate Bridge.
Sometimes we don't bother putting up screenshots as most of the time the scenes are more focused on the characters, but concept art is absolutely noted.