Minor gripe: that's the time it takes you to read both the introduction, think about the context and judge the comment. Presumably, one would save a few seconds (and thus a lot of time in the long run) by being aware of the context and the article while working.

Still: major amounts of work. Though I presume that having comments hidden by default would take off some pressure: commenters won't know/notice their comments takes 14:55 or 13:29 to show up publicly.