Echo chambers are also chosen by users, though. They choose who to friend, follow, un follow, like, block, etc. In a broader sense, people have media habits tha

Echo chambers are also chosen by users, though. They choose who to friend, follow, un follow, like, block, etc. In a broader sense, people have media habits that are fueled by their own views, I doubt a trumpism follower would choose to read NYT or WaPo. There is some personal agency here.