Maybe the person who saw it as [delayed] is using a third party HN reader app and the HN website itself filters out delayed comments while returning it via the API as the [delayed] string and expecting clients to do the filtering?
I’ve also never seen it in the many users of (mostly many times daily) visiting HN.
Maybe the person who saw it as [delayed] is using a third party HN reader app and the HN website itself filters out delayed comments while returning it via the API as the [delayed] string and expecting clients to do the filtering?