It’s barely more work than just clicking “Not interested.” though. Just click “tell us why” and “I’ve already watched this video” and it knows that you didn’t dislike it. Trust me, I’ve been doing this for a while now and it still properly recommends videos. It just cleans up your recommended queue because it knows that you’ve already watched those ones in particular. I’ve watched a lot of music deep dive content this way because the ads stupidly will interrupt at the worst moments and ruin the flow, but that kind of content still shows up on my feed all the time.