When a submission is active and has comments, the link to the discussion
page reads "# comments" where the "#" is the number of comments.
After some period of time (yes, I know it's more complicated than just
time), the comments on a submission are disabled. Of course, this is
good, and it stops the stupid bot that always posts "This is why we
can't have nice things."
The trouble is when comments are disabled, the various submission
listing pages reads "comments" without the leading number. Since we're
trained to expect seeing a leading number from active threads, the
expectation when seeing just "comments" is that there are no comments at
all. It would be better if closed submissions are marked "# closed" or
better "# comments (closed)".
Although it seems you have a special exception for this "Feature Request"
thread to allow submissions even though it's ancient, it still reads
just "comments" without the leading number, and hence, we've got no clue
how much reading we might have to do.