Oof a lot of hate for this feature. I agree more configuration would be nice, but at the same time, this is absolute science fiction come to life. Even for people who speak multiple languages: let's say you speak English, German, and French. That means you understand about 25%[1] of other people on the planet. That's 75% of videos which you would otherwise _never see or understand_. This feature is for people who _do…
While I agree that good automatic translations are great, the fact that the current unconfigurable mess that doesn't even respect the user's settings (neither the settings of their Google Account nor the settings of their browser), makes it a grating experience to multilinguals, who are believed to be the majority in the world.
But also I might just be lucky, I speak multiple languages and have traveled into various countries, and have never had youtube show me anything other than English wherever I go.
Edit: And although multilinguals are in the majority over monolinguals (I think, citation needed), I think being multilingual still makes you part of an even larger majority, which is humans who are unable to watch the majority of videos due to language.