A screenshot, taken way before rexxit, of two comments on reddit, dated “1 year ago”.
The first comment is by a deleted user and the comment has been removed. The second comment is a reply to the deleted comment and it says: “That solved it. Thanks!”
Edit: added temporal context.
I think as long as the original post is up it would hit enough key words but I could be wrong. Deleting the actual post is more effective than the comments.