Until it is. In this video of a Cruise stunt during the filming of Mission Impossible 6 in London, we see him safely tethered while performing a ball-clenching leap from a scaffold to the side of a building. It looks like classic Cruise, sprint and stylish leap, then he lands way too hard for comfort.
The movie star climbs to his feet, but it's obvious that he's hurt. He seems to try to work through the blow, but his pain is obvious till the very end of the video, when he's back on the scaffold and released from the tether.
Cruise's earnestness is sometimes a target for mockery, but this is a man who has said outright that he does everything he can to really give moviegoers a hell of a show.
The extent of the actor's injuries are unknown, but if he's basically okay, it's even money that this footage stays in the film.