Usually I access the pages of youtube videos for the purpose of getting
information about the video (as opposed to actually watching the video)
through a script of my own. One of the things it displayed until recently was
the rating of a video. Basically somewhere on the source of the video page
there would be something like
"averageRating":"4.9422383"
as part of a lot of Javascript. But in the last few days I have not be seeing
this. I saw it most recently with
https://www.youtube.com/watch?v=BXun3qpzpDk
on 2021-12-12. Now even that video doesn't have it. Looking at this and some
other video pages with a couple of different browsers I don't see any "rating"
(I still see "Likes" and "Dislikes"). So I am hoping that you can do some
tests of your own and report. If you have a youtube account (I don't) try the
page with and without being logged in to see if a rating appears on one
occasion but not the other.
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vlaho.ninja/prog