New ask Hacker News story: Ask HN: Does allowing downvoting encourage groupthink?

Ask HN: Does allowing downvoting encourage groupthink?
3 by ern | 4 comments on Hacker News.
I’ve now spend a fair amount of time on Reddit, and I find that the same pattern holds: if one expresses an opinion that the forum orthodoxy, it gets downvoted. On Reddit this led to toxic subreddits being created with their own groupthink. Even HN isn’t immune to this. Is this a widely observed phenomenon?