I don't think I'm entirely missing the point. Certainly, I'm knowingly dodging the point for some players. Probably quite a lot of them.

Online videos are a whole extra layer of separation. You're out of the game, going through someone else's UI, reading pace, settings, seeing people who probably aren't even part of your character's reality (server), etc. Subtle differences, but they add up. And they're generally separate from the fights, too. Having it in-game would keep everything consistent and connected to the rest of your experiences. It's a very different feeling, IMO.

Yes, if you want to see yourself being the hero, you'd still need to actually go be the hero. If you just want to know what happens, this would provide a reliable way to do that, that doesn't take you quite so far out of your character's reality.