Twitter is testing a way to downvote Tweet replies on iOS to understand the types of replies users find relevant to a conversation; downvotes won't be public (Chance Miller/9to5Mac)

Chance Miller / 9to5Mac:
Twitter is testing a way to downvote Tweet replies on iOS to understand the types of replies users find relevant to a conversation; downvotes won't be public  —  Last year, Twitter's chief product officer Kayvon Beykpour confirmed that the social network was “exploring” the idea of adding a dislike button to the app.