I dunno; there has always been shit videos on YouTube, obviously, but there used to be a sort of natural filter of videos that had nice transitions and decent narration and dialog that was more or less grammatically correct that made it so that I would mostly watch videos I enjoyed.
Now that AI has cargo-culted these traits I'm getting a lot of recommendations of videos that will initially seem "ok", and then I realize after about a minute that the narration will have some weirdness, and the script will have a lot of the typical ChatGPT "tells", and of course the video comes off as pretty low effort after that.
My YouTube recommendations have become increasingly useless, which honestly might be a good thing because it's made it so that I have less desire to use YouTube.
The weirdness is creeping in to regular Youtube content too. For example, I like to watch Ryan Hall's stream during extreme weather (tornado season in the US). In his forecast videos he has to start with something weird to prove to the audience they're not watching a fake AI generated channel, like eat a banana or apple while talking and wave the fruit around. It was very strange until i realized what he was doing. He also started wearing a suit which is very out of character for him, that must also confuse AI trained on his previous videos.