The pursuit of "consensus" often leads people to censor themselves, put things on "the shelf," or engage in forms of Groupthink that is unattractive to those who emphasize the pursuit of truth over the pursuit of group cohesion.
This is common to large organizations, political parties, religions, scientific fields, and so on. In LDS culture, we see it happen both within and without the Church. Groupthink dominates both Book of Mormon Central and Mormon Stories, for example. Neither group tolerates different ideas if those ideas threaten their respective sources of income and influence.
Polarization is becoming more prevalent all the time because of technology and sophisticated psychology.
This analysis suggests the problem is more deep rooted than we usually realize.
Why Social Media Is So Good at Polarizing Us
Mathematicians are teaming up with political scientists to create models of how social media divides us, and results suggest at least one popular solution might actually make the problem worse