This article seems to be talking about progressivism as a political movement adopting supersessionist ideals, less so churches.
It also trys to justify the Evangelical "all Jews will convert or go to hell when Christ returns" as somehow different than Supersessionism.
He does give the game away though on why it gets a pass. It's not because its not Supersessionism, but because Christian Zionism is beneficial to Israel.
Sentence 1:
I think we can largely break individuals down into one of two different categories concerning epistemology,
1) Those who let their philosophy/politics influence their view on their religion/A-Religion.
2) Those who let their religious/A-religious beliefs guide their views on philosophy/politics.
I think that for many progressive churches, you can see their Neo-marxist "have vs. have not" philosophy coloring the way they view scripture. "Man, if the Egyptians had borders like we do today, Jesus would have never been allowed to escape Herod." Hilarious, since Rome annexed Egypt in 30 BC, but I digress. The point is, their core belief system is philosophical, which then bleeds over into their religious beliefs.
Here is a
link to an article a college friend of mine wrote. Notice how he tries to equate the political position of "gun control" with the true teachings of Jesus and how "white _____" is the core problem. Feel free to view his other works and look for the "social justice buzzwords."
Sentence 2:
While it may seem like those two concepts are tightly linked, non-Supersessionist's believe that the Jews remain God's chosen people, but they must still make the same repent/believe transformation as everybody else. In that sense, there is no difference between Jew/Gentile. Despite that, God did make a unique covenant with them.
Super's (supersessionism) believe the Jews have been replaced. It may seem minor, but the theological implications and practical effects are major.
Example A,
"A unique phenomenon in Ireland is that many antisemitic attitudes in Ireland appear to originate within churches themselves, Bumin noted. Beliefs such as supersessionism (the idea that God’s covenant with the Jewish people has ended) and blaming Jews for the crucifixion of Jesus are “far more widespread in the Irish community than they are in America,” he said."
Neo-Marxists hate Jews because they are the "have's" whereas other super's dislike them for other reasons as illustrated above. I agree that the foundational beliefs may differ, but they arrive at the same super theology, regardless at the expense of the Jews.
Sentence 3:
As for why the Jews like Evangelicals, agreed.
In fact, I'll go a step further. Going back to religious beliefs effecting philosophy/politics, that can be clearly seen on the right, see: Mike Huckabee.
Here is an
example from 2017 where a Bill to receive hurricane aid was tied to a pledge not to boycott Israel. That to me is insane.
So, while I certainly have a major axe to grind with progressive Christianity, I also think many, typically, evangelicals go a step too far in support of Israel. A lot of people blame AIPAC for that, but I know a large number of evangelicals that don't take money from them, yet remain their most zealous supporters.
Full circle back to the start. Most Christians support Israel for religious reasons and the ones that don't tend to believe in some form of replacement theology. Whether the roots of that are Marxist, Nazi, etc. is largely irrelevant to the general point imo.