The fidelity argument assumes subtitles give you the unaltered film, but they don't—they force your eyes to leave the frame. You're reading text, so you miss the actor's micro-expressions, the composition, the visual jokes that come and go in a second. That's a loss of performance too, just a different one. A good dub lets you watch the image continuously, which for many films, especially action or comedy, is the better experience. And if "better" means reaching the widest audience with genuine engagement, dubbing has a long, respected tradition worldwide. Subtitles are great, but they're not the only legitimate way to see a film.