I don't want to argue definitions. If you prefer to call a comment 'deleted' which anyone with 'showdead' turned on in their profile can read, that's fine. On HN, we've always used the word 'dead' for that class of comments.
I don't want to argue about what to call it. I just confirmed the fact that the text that was deleted and made unreadable is back to readable. Still, I'm surprised that comments are sometimes hidden from even being present here.