the "day of self admonition", the world tree wiped out every piece of modern weaponry it could and killed a lot of people, IIRC kaboku had a military base so took a not insignificant amount of damage and they blamed Hades for failing to protect them from it and seemed to have whitewashed it as "it was his fault that we were attacked at all"
lol Another side to the anti-modern-weaponry narrative spun into this tale, though I saw the ruins of military hardware in that one chapter in which the pedobait white mage was learning about it in her class. I figured that people wouldn't just let go of the weapons needed for whatever purposes (likely because their enemies have them too) and so casualties would mount, but--given the framing of the World Tree's actions--I came under the impression that it sought to preserve life. Evidently, said tree didn't seem to care much about that as long as its goal--which it arbitrarily and unilaterally deemed just, apparently--was met; indeed, Kaboku learned that the hard way, according to what you said.
That being said...I was also under the impression that the magical world--together with all the "gods", skills that were
ostensibly intended to replace those weapons, and such--that replaced that of modern weaponry came into being
after those weapons were destroyed. If that was the case (and I am not wrong), how would Hades be in the position to help at that time?
If it is as you say, however, Hades is still apparently in the right--Kaboku's residents reached that conclusion purely on a wave of emotion; that seems to be fairly characteristic of them, given their apparent total lack of inclination to consider his circumstances instead of how to save their own bacon.