Earlier quoted context omitted.
I've always felt the downvote option was a colossal mistake and just allowed controversial or unpopular points of view to disappear, strengthening the filter effect for everything else. I mean even 4chan doesn't have downvote functionality, if people disagree with you they'll just call you a f* or n* which, while nasty, doesn't actually change visibility of your post, plus only the admins can ban you or delete a post…
But 4chan is also a complete cesspit. Like any place that adopts "free speech absolutist" attitudes. Reddit's heyday is long passed, but at least it is still very useful for grassroots information amalgamation. If you've ever had to google some issue, typing reddit into the query will land you some posts with discussion in them. Good luck finding that on 4chan.
"free speech absolutism" wasn't ever a huge problem, on the contrary, the suggested alternatives always seem to end up worse.
You have to suffer through idiotic opinions if you expose yourself to new ideas. There is never any alternative to that and there is no magic moderator that can make this decision in your stead. It isn't any more complicated than that really.