>>>In other words, this is all hypothetical.<<<
Of course. There are many historical events that can be deciphered from the text; but some will continue to be obscure. After all, John was not writing to us; but to the seven churches in Asia at that time.
One thing is certain: the destruction of the great city was referring to destruction of Jerusalem in 70 AD; and has nothing to do with modern events.
Philip
It’s not clear that the destruction of Mystery Babylon has to do with the destruction of Jerusalem.
That is purely hypothetical. You must acknowledge that many disagree with you, so it can’t be “certain”.