Those videos all sound like things that would be _very_ popular and if we could see it have a very good like to dislike ratio. They would likely be over 99% like vs dislike. If dislikes were still visible, you'd merely just see that your tastes doesn't match what the masses want.
This stuff does very well. It gets good clicks, good watch times, good engagement (likes and comments). Hence why everyone does it and it is what's most recommended.
It does do terribly with a lot of the subcultures that hang out on Hacker News, but we are small in the grand scheme of things.
A better explanation is they changed The Algorithm to try and promote more stuff that is new to you. A common complaint about The Algorithm last year on HN was it tended to recommend the same small set of videos over and over again. Mostly stuff you have seen multiple times before. This was leading to people getting bored with YouTube and going to Netflix or whatnot.
So instead of that, it is now trying to recommend you new stuff. And it is not finding stuff you'll like. What you listed all has a theme of general science topics. Its probably now trying to push the most popular stuff in that category to keep your recommendations from getting stale. The usually means will take care of it (disliking the videos, clicking don't recommend video/channel).
This stuff does very well. It gets good clicks, good watch times, good engagement (likes and comments). Hence why everyone does it and it is what's most recommended.
It does do terribly with a lot of the subcultures that hang out on Hacker News, but we are small in the grand scheme of things.
A better explanation is they changed The Algorithm to try and promote more stuff that is new to you. A common complaint about The Algorithm last year on HN was it tended to recommend the same small set of videos over and over again. Mostly stuff you have seen multiple times before. This was leading to people getting bored with YouTube and going to Netflix or whatnot.
So instead of that, it is now trying to recommend you new stuff. And it is not finding stuff you'll like. What you listed all has a theme of general science topics. Its probably now trying to push the most popular stuff in that category to keep your recommendations from getting stale. The usually means will take care of it (disliking the videos, clicking don't recommend video/channel).