It's worse than just being insulated, it's reinforced by the scoring.

Any reasonable comments on reddit are at the very bottom marked with negative votes to reinforce that 'everybody' finds it reprehensible. Even if you sort by controversial and see a few rational comments, the next level boosts the most insane hivemind reply (also controversial because the sane people are there downvoting it).

Scoring should work where each upvote is worth say 5 downvotes.

They'd need 5x more hivemind voters (since each user only gets one vote) to drown out minority views and so what would happen is you'd see retard hivemind view and then not too far below it an actual sane, factual, reasonable view.

I'm convinced that the reason they actually hid up/down totals was to purposely encourage this hivemind.