Only if usable after some karma threshold.

This is still the internet, there is a lot of spam, trolling and malicious people.

An unmoderated space doesn't last very long.

You can enable the option to view dead comments. I have that set, even though the vast majority of dead comments I see are blatant non sequiturs or spam.

they are still not really readable without custom script, you would need to click each of them one by one, so they are essentially hidden and inaccessible since you have to jump through way too many hoops to see them

Or maybe they could just remove Downvote button for everyone and let users upvote content they like and if it's something really bad (not just different opinion) then there is Flag button and if you flag something there should be displayed "Flagged by XY for reason: XY" you would need to fill and which could be seen right under flagged comment.

But I knwo this is never going to happen because it's too transparent and welcoming diverse opinions and you could suddenly see all those anonymous internet heroes.

Thanks to anonymous internet heroes for proving my point.

You can just start a Subreddit fed by the HN front page and have exactly this, any time you want it.