YouTube appears to be testing hiding the dislike button on videos, as reported by 9to5Google. At least two users on X have recently shared screenshots of the dislike button now being placed in the three-dots submenu, and a user on Reddit also shared an image of the dislike button being absent for them.
Right now, for me, the dislike button sits right next to the like button under a video. Moving it to a submenu would make it considerably more of an effort to access, meaning that fewer people would likely use it.
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