Twitter is testing a new feature where users will be able to upvote and downvote replies on tweets, saying this is still not a 'dislike' button. We're testing this to understand the types of replies you find relevant in a convo," Twitter said on Thursday. The testing is currently being done on a select group of iOS users. As of now, only YouTube has a 'dislike button' that shows the number of likes and dislikes in a video. While YouTube’s dislike button is visible to all, Twitter does not want to show downvotes.
Source: The Star July 22, 2021 06:56 UTC