Yeah it really is an echo chamber type algorithm. I like it too because if I see garbage I hit the back button. Hopefully that trains it more. I generally watch DIY, history, video game reviews, and a few different genres of music and youtube has certainly helped me find more of the same. However if you're watching conspiracy videos and right wing propaganda you're gonna get more of that and it becomes a self fulfilling prophecy of drek and dumpster fire videos.