YouTube comment sections are weirdly positive always. It could be a video of some horrible crime and the comments will be about how great the channel is and encouraging the channel to keep making more videos. When j visit actual fan pages anywhere else online there are always a mix of opinions. But youtube is constantly full of obsequious people
Self-selection bias. The YouTube algorithm is very good at showing you things you want to see, so generally speaking, most people who comment are going to like the content. Especially music.
That said, it’s not all positive everywhere. I assure you Gamer comments can just be as toxic there as they are everywhere else.
When I still used YouTube it recommended me crap I could hardly have cared less about or even things I actually disliked.
To me, Youtube was always synonymous for faulty algorithms.