But just look at that same behavior over time. Say you searched for car videos yesterday, and today you are searching for basketball videos.
Old youtube used to be very simple and recommend similar videos to the current thing you are watching, so you would get basketball videos when you were looking for basketball videos.
Now, it will do that for some but also put car videos in the recommendations as stuff you "might like". Not only that, it will probably recommend the same car video you watched yesterday because you liked it yesterday so surely you'll love it today too right ?
This only gets worse as you add more "unique" topics to your searches and follows. It doesn't matter what video I'm looking at, I get the same recommendations for all of them.
Old youtube used to be very simple and recommend similar videos to the current thing you are watching, so you would get basketball videos when you were looking for basketball videos.
Now, it will do that for some but also put car videos in the recommendations as stuff you "might like". Not only that, it will probably recommend the same car video you watched yesterday because you liked it yesterday so surely you'll love it today too right ?
This only gets worse as you add more "unique" topics to your searches and follows. It doesn't matter what video I'm looking at, I get the same recommendations for all of them.