Interesting post, insightful to learn about.

Filter bubbles are such a strange social phenomenon. It doesn't seem to be a conspiracy or intentional plan of any groups, but rather a natural tendency that arises in a wide variety of styles of social network. On Reddit, for example, one could argue they were created to expand the range of discussion, to counter the original "reddit hivemind" where all discussions had a single upvoted viewpoint. As subreddits became moderated towards more narrow focus, they split and segregated, but now more total viewpoints can be discussed. However, what is lost is a place for these viewpoints to be opposed.

Perhaps it plays an allegory to how the value of diversity comes not from how we are similar, but how the differences allow us to see more total perspectives than we could access alone.