Comments from banned accounts get killed by default. If you see a good comment that's dead, please don't copy it. Instead, vouch for it (https://news.ycombinator.com/newsfaq.html#cvouch). That's the entire reason for the vouching feature.

Other users vouched for that comment (https://news.ycombinator.com/item?id=31521548), so now we have two copies of it in the thread—the original, plus yours—and a split discussion, which makes merging the threads a pain. I'll move the replies to the proper place, but please don't do this again. (edit: especially since you've done it before - e.g. https://news.ycombinator.com/item?id=31178929)