>>79850395Dislikes are not available to the client anymore. The dislike extension explicitly tracks the like/dislike ratio of people that have the extension installed, then extrapolates that to the amount of likes/engagement. E.g., if 4 people have the extension and 2 disliked the video, then it'll assume a 50% dislike rate, and if the video has 500 likes it'll extrapolate that and show it as having 250 dislikes also. (It probably doesn't work exactly like that but that's the general idea.)
Basically, the extension is a meme and people should really just stop using it.
The DVR restriction on the other hand it just a client flag that tells it to not buffer any video, and always seek to the head of the stream when you unpause. If a client is allowed to receive a stream, there's no way for the server to just force it to amnesia the already streamed portion other than just asking it nicely (which the script ignores, in this case). I believe because of this, and because it's shared infrastructure/functionality with VOD archiving, YouTube hasn't bothered to enforce not being able to load the existing video while a stream is still underway either.
