I think there is probably plenty to object to in the event, but this entry is confused.

Every nation is Israel now.  If God judged Ninevah and then had mercy when they repented, all nations now are much more under the judgment of God and also much more assured of mercy if they repent.

(Of course, it is true that no nation is now Israel in one sense, but it was also true that it would have been blasphemous for Ninevah to imitate God’s law by building a temple.  But the basic promise to save the repentant applied to Ninevah and it much more applies to any nation in the new covenant age.)

Jesus is “the ruler of the kings of the earth” (note this is from Revelation 1.5 but it gives Jesus’s present title, not a future prophecy).  He is the Davidic king who rules the all kingdoms, not just one.

When Daniel interprets Nebuchadnezzar’s vision, he doesn’t say that a trans-dimensional rock falls to the earth in a different reality so that it leaves the kingdoms of the world unaffected in a common grace realm.  He says the rock shatters the image into dust and then grows into a mountain that fills and waters the whole earth.

Once only Israel was Israel, but now Jesus says to go and disciple all the nations because he has been given all authority in heaven and on earth (Matthew 28.18-20).

So, yes, the church is institutionally distinct, but it remains the case that all nations need to repent and believe the Gospel and trust God to save them.

Q. 191. What do we pray for in the second petition?
A. In the second petition (which is, Thy kingdom come), acknowledging ourselves and all mankind to be by nature under the dominion of sin and Satan, we pray, that the kingdom of sin and Satan may be destroyed, the gospel propagated throughout the world, the Jews called, the fullness of the Gentiles brought in; the church furnished with all gospel officers and ordinances, purged from corruption, countenanced and maintained by the civil magistrate; that the ordinances of Christ may be purely dispensed, and made effectual to the converting of those that are yet in their sins, and the confirming, comforting, and building up of those that are already converted: that Christ would rule in our hearts here, and hasten the time of his second coming, and our reigning with him forever: and that he would be pleased so to exercise the kingdom of his power in all the world, as may best conduce to these ends.