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
YouTube comments don’t really encourage conversation about the content and are largely used nowadays as a way for people to leave messages for the creators. In addition at one point (possibly still ongoing), the YouTube algorithm really responded well to comment engagement so in videos, creators would encourage commenting alongside liking and subscribing.
I think in combination this led to people commenting on the content they watched, which was largely of creators they have fondness,but having nothing to really say, in addition other like-minded people would open the comments and like the positive one, catapulting them to the top.
It must have been about 5-10 years ago that it was standard practice to block YouTube comments because they were so toxic, so it’s interesting how times change.