Nonsense: If this is really the case then you should be able to tabulate historically when each of those nations served Babylon.
Yes, you're right - that is nonsense. Ironically, the Watch Tower Society actually put it best on this one in Isaiah's Prophecy, volume 1, page 253: True, the island-city of Tyre is not subject to Babylon for a full 70 years, since the Babylonian Empire falls in 539 B.C.E. Evidently, the 70 years represents the period of Babylonia’s greatest domination—when the Babylonian royal dynasty boasts of having lifted its throne even above “the stars of God.” (Isaiah 14:13) Different nations come under that domination at different times. But at the end of 70 years, that domination will crumble.
It is correct that the 70 years represents the period of Babylon's greatest domination. (Which you can see that they state the that domination ended in 539 which logically means it started in 609.)
In is not correct to say that Tyre was not subject to Babylon a full 70 years and different nations came under that domination at different times.
All nations were subject to Babylon for the same 70 years. It started and ended at the same period for all the nations, and that period was from 609 -539, when Babylon was the 3rd world power. (It's greatest domination period.)
Being subject/serving Babylon was not contingent on a nation being destroyed or being brought to Babylon as captives. That only happen as a punishment for not serving willingly.
[Jeremiah 27:6 And now I have given all these lands into the hand of my servant King Neb·u·chad·nezʹzar of Babylon; even the wild beasts of the field I have given him to serve him. 7 ALL THE NATIONS WILL HAVE TO SERVE him and his son and his grandson until the time for his own land comes, when many nations and great kings will make him their slave.’8 ‘If any nation or kingdom refuses to serve King Neb·u·chad·nezʹzar of Babylon and refuses to put its neck under the yoke of the king of Babylon, I will punish that nation with the sword, with famine, and with pestilence,’ declares Jehovah, ‘until I have finished them off by his hand.’9 Therefore, do not listen to your prophets, your diviners, your dreamers, your magicians, and your sorcerers, who are saying to you: “You will not serve the king of Babylon.” 10 For they are prophesying lies to you, so that you will be taken far away from your land and I will disperse you and you will perish.11 ‘But the nation that brings its neck under the yoke of the king of Babylon and serves him, I will allow to remain on its land,’ declares Jehovah, ‘to cultivate it and dwell in it.]