The US would not have stopped without total surrender. That would not have come without massive loss of life. Whether or not more died to the bomb is a moot question. The better question is how many would have survived without it and would it have been classified as a genocide afterward.
There was no distinction between civilian and soldier on the eastern front after Iwo Jima and Okinawa, the civilians fought as combatants.
The Japanese still exist due to the bomb and the Emperor.
This situation is an example of idiots on both sides. The activist could have looked at Potato production in France and Filipino Farmers could have looked at the US South prior to enriched flour. Grow Golden Rice for export and it will become a commodity crop. I know several farmers in the US that would love to grow Golden Rice and no-one outside the Philippines can get the stuff due to the genetics group that is stupidly restricting it due to grain quantity. IF the Philippines doesn’t want it the rest of the world isn’t that dumb. You just got the money for humanitarian reasons you lucky fucks.