The entire world is corrupt, every nation. The Body of Christ is set apart, saved. The spiritual city of God's elect is the bride. The spiritual city of Babylon is everyone else.
False. This argument is false.
That the entire world is corrupt doesn't negate the fact that some countries are considered more culpable than the rest of the world.
The primary example being the Roman Empire's collaboration with Israel in regards to the 1st century Crucifixion of Jesus.
That the entire world was evil doesn't negate the fact that the Jews and Romans are to be considered more culpable than the rest of the world.
For that reason, the Jewish temple was destroyed in 70 AD and the Jews have been exiled from the Holy land until 1948; but such a calamity was never concomitant for the rest of the world, since the rest of the world are not as culpable as the Jews and Romans.
So, the Fall of America-Babylon is regarding the End Times, which is clearly stated in the Book of Revelation, Chapter 18.
In the context of Eschatology, America is to be seen as more culpable than the rest of the world, since the US establishment are Christ-killers, just like the Jews and Romans before them.
Since the majority of Americans are projected to "Break (or reject) the Covenant of Christ" (Isaiah 24:5-6) on account of their own history, culture, politics and ideology, which is why Americans would suffer inexorably more so than any other Christian nation.
Consequently, and realistically, America should be more devastated than any other nation in Christendom, since this country is more culpable than any other nation throughout the entire Christian world.
That God will destroy the entire earth (Isaiah 24:1) at the time of the Tribulation doesn't mean that the scenes of carnage, death and destruction should be "equal" nor "identical" between different regions of the country, nor the same in every country across the entire earth - As attested by the differential accounts given by Isaiah 24:10 vs Isaiah 24:12.
That human remains will be incinerated and scattered all over the earth (Jeremiah 25:33) doesn't mean that the scenes of carnage, death and destruction should be "equal" nor "identical" in every town, and in every country across the entire earth - As attested by the discrepancy between Isaiah 24:10 vs Isaiah 24:12.
Clearly, there are some people and countries which are to be affected more than others; as some groups are deemed to be more culpable than the rest of the world.
So, it's only fitting that God should punish them more than others, and they will suffer more than the rest of the world.
Besides all of this, America is singled out here, since it is the
only preeminent superpower at the End Times, which means it must be set apart from the rest of the world - As such, the Fall of "Babylon" must be seen as more discernible, distinctive, and significant than the demise of any other power, which is
another reason that Revelation 18 is entirely dedicated to the Destruction of America as the world's
preeminent superpower.
So, I'm sorry that your argument doesn't wash, since it is a
flawed argument for the reasons I have stated.