This extension will block the ability to eaisly comment on RedditThis small extension is like the Nicorette gum of Reddit commenting. All it does via a few lines of JavaScript is hide the “reply” text on comments and the comment entry text box at the top of threads.
If you find yourself unable to stop arguing with the unwashed masses online this extension may help.
I have not tested it on any OS aside from Windows 7 but I welcome any feedback if it does not work.