I concur, but that's because I use YouTube for very narrow niche content that the algorithm helps me find. If I was open to YouTube helping me figure out what to get interested in, I have every reason to believe it would be as horrible as what Spotify tries to get me to listen to or the sponsored posts Instagram shoves down my feed.

For the record, YouTube is full of amazing German-language TV documentaries, and since many of them are posted by unofficial accounts (read: not the broadcaster's channel), it's the algorithm that surfaces them, not search.