Downvoting for being blatantly inaccurate or blatantly anti-community seems a worthwhile community-sourced signal for the posts of bad actors (whether temporary or permanently bad actors). This should absolutely factor into the sorting and eventual hiding of sufficiently negative posts.
For people who think of themselves as good actors, I will reflect on posts that attract downvotes and try to figure out if I should have been more constructive on a given post. (I don't "care" about the score per-se, but I do care about the community that I'm part of and if people are telling me that I'm being an asshole on a given post, I should reflect on that, decide if I agree with them, and if I do, to change next time. (Often, I think my content was fine and someone just disagreed and used a downvote to express that. That's not how I use downvotes, but if they do, so be it...))
For people who think of themselves as good actors, I will reflect on posts that attract downvotes and try to figure out if I should have been more constructive on a given post. (I don't "care" about the score per-se, but I do care about the community that I'm part of and if people are telling me that I'm being an asshole on a given post, I should reflect on that, decide if I agree with them, and if I do, to change next time. (Often, I think my content was fine and someone just disagreed and used a downvote to express that. That's not how I use downvotes, but if they do, so be it...))