I wrote about comments on Stack Overflow and how they are sometimes discouraging to outsiders. I also wrote a meta post that suggests leaving a comment is effective at encouraging a new question from the asker no matter whether the comment is positive or negative. I've long wished people would use their downvote privilege without also adding a comment. Suffice it to say, I think we have a lot of work in front of us to fix our comment problem.
This is a companion discussion topic for the original entry at https://jlericson.com/2018/07/20/steam_comments.html