Personally, I primarily downvote posts/comments where I generally think “reading this post/comment will on average make forum readers be worse at thinking about this problem than if they didn’t read this post/comment, assuming that the time spent reading this post/comment is free.”
I basically never strong downvote posts unless it’s obvious spam or otherwise an extremely bad offender in the “worsens thinking” direction.
Personally, I primarily downvote posts/comments where I generally think “reading this post/comment will on average make forum readers be worse at thinking about this problem than if they didn’t read this post/comment, assuming that the time spent reading this post/comment is free.”
I basically never strong downvote posts unless it’s obvious spam or otherwise an extremely bad offender in the “worsens thinking” direction.