The best part of YouTube recommendations - side bar recommendations - have been broken for at least 7-9 years. I remember going on deep YouTube rabbit holes in another era, because their recommendations always pointed to new, highly related content. Then, at some point in time, YouTube switched their recommendations algorithm to direct me to a mixture of 1) videos (mostly on unrelated topics) that I've
already viewed, 2) videos about topics that I've recently searched for or watched that are unrelated to the current video, 3) videos trending across all of YouTube, and etc.
There are other things that drive me nuts about YouTube's recommendations, like the fact that they will never recommend me the next part of a n-part video. If I'm watching part 2/3 of something, please show 3/3 in the side bar, YouTube!
YouTube's iterative degeneration into its current state points to the folly of A/B-maximalism. In the pursuit of getting more base hits, it seems like YouTube forgot that the goal of baseball is to win games and keep fans entertained.
YouTube has been bad for a while. I suppose that some part of that is good – YT effectively killed the addictive loops that made their website irresistible. However, there is a lot that sucks about it. The utility of YouTube has gone down. Furthermore, I think YT blew open a hole in the video space for services like TikTok to emerge. TikTok may be crack, but YouTube used to be cocaine.