Who’s “we” here and on what basis are you able to speak for that group? It has been stated by pg himself a long time ago that it’s ok to downvote to express dislike or disagreement.
> Although it's unavoidable to some extent, I really don't want HN to develop a strong filter bubble where only things I agree with get shown. I want to see dissenting opinions and ideas.
HN already has a strong filter bubble on various topics. Yes, it may seem better than some other communities, but any place that constantly allows new users to view or participate will have them (the new users) see some sort of filter bubbles established and enforced by the ones who have been around for longer (and have these as blind spots that they cannot recognize).