Yes, if you're so encircled by bad guys that you can't reach any blacklist providers, but have received a gossipy hint (via a leak in the blockade) that there's

Yes, if you're so encircled by bad guys that you can't reach any blacklist providers, but have received a gossipy hint (via a leak in the blockade) that there's a new version you don't yet have, blatant alarms should go off. You're no longer on "the internet", you're on some attacker-chosen & time-lagged subset... and you need to know that before connecting to sensitive sites.