Yikes. Imagine living in a situation where the government of your own country has as much care for your life as the enemy.
Controlling the propaganda and information and not letting the enemy direct their narrative was something each government wanted to fully own regardless of the outcome to civilians, even the allies:
The Londoners were told that the V2 rockets landing on their heads were "gas explosions" because it was better for population morale them not know the enemy has such advanced long range strike capabilities as that would increase fear and lower morale and we're less likely to support long time war attrition with this knowledge.
Same with the Japanese, why would they parrot the enemy narrative to the population, especially that until after the bomb blast was examined, Japan didn't believe that the US already had a nuclear weapon so soon.
The first bomb had already been detonated in Hiroshima a few days prior. They had radio. Are you saying they still felt the threat was not credible?
Seems like they don’t blame their government all that much