I found this amusing too. If anything great to see mozilla keep issues active for so long.
Closing issues after a while if the reporting user fails to follow up on a request for additional information can be useful. But more often than not these stalebots kick in because the maintainer(s) never chimed in. Don't use a bot that can't distinguish between those two cases unless your only aim is to wage war on your users and sweep everything inconvenient under the rug.
What good would that do? Seems to me that up or downvoting a HN comment won't have any effect on TN usage of Stalebot