As someone whose views don't align with a good chunk of HN readers (or don't align, period), I've grown to
love reading about differing ideas through the eyes of others computing/tech enthusiasts. There's common ground to start from and most importantly, even if it turns out to be a viewpoint that deeply goes against my values I can
still respect this fellow human because of their tech expertise.
I have to admit, it really irked me at first when I came here. How can all these people that like the same things as me, have ideas that are so ... "wrong?!" (just kidding, honest :) ) But then I learned to listen and realize that these opinions will be here whether I engage them or not.
Of course, I see subthreads that aren't very "objective in the way I want them to be". But I don't share your experience with downvotes. I try to refrain from trying to convince the person I'm directly replying to if their view is directly opposed to mine, that never works any way. I just state my own personal position and how it reflects. Sure I get the occasional downvote but that's almost always when I've let myself be confrontational about it. Also, there's a big difference between providing a link to some facts that a person might not know, and a very opinionated link (that may also have facts and numbers) that is arguing your point.
So yeah, while I support the experiment (it'll be interesting to see), I really hope they don't extend this to forever, but just occasionally after particularly turbulent US elections.
Finally:
> fair treatment to minority opinions
Come on what does that even mean? I don't know what your opinions are. You don't know what mine are (you can read my comment history but good luck). I have no idea what "fair treatment to minority opinions" should even mean. My opinions are minority opinions too (I'll change them if you don't believe me), but I know this; People that complain their opinions aren't getting fair treatment are very rarely worth listening to, regardless of position. I prefer a better signal-to-butthurt ratio.