Terrorists don’t wear body armors, and “power” of guns don’t matter as well.

In fact, it gets weaker and weaker as guns improve because the required amount to “stop” a human had been grossly overestimated.

.308 hunting rifle cartridge, still deemed necessary to stop charging wild animals, has muzzle kinetic energy of 3.5kJ. .223Rem for AR-15, used in wars against humans, is 1.8kJ, 9mmx19 used in latest “tactical self defense” PCCs is just 0.5kJ.

Bullets are all deadly if it hits and when it hits.

Conventional military weapons aren’t effective against a Godzilla, and nukes only strengthen them. Effective means are strong basic chemicals, another Godzilla class monster, or fricken lasers.

It’s kind of a tangible realization of sense of grave defeat from WWII among Japanese population immediately post-war, hence weakened emphasis on militaristic means in its plot.

Interesting points. I didn't make those connections, watching the 2019 American version King of Monsters yesterday. Bailed out one hour in feeling too much sensory overload. Might go finish it now.