I dont think it is particularly useful to insta-block from your profile all people that have a certain opinion about a specific topic, because i dont think thats what conforms an identity or a way of being. I am not my opinions on political stuff (i change them through time), and many people i disagree on those topics have interesting things to say that i wanna hear about different topics.
For example this forum, we are united by a general interest on tech or privacy, which is not particular of a certain political side, but a transversal interest.
I think a dream social media platform promotes healthy conversations, and yes, to mute topics or people you dont wanna hear about. Opinions for the most part are okay, its fun to try them out.