I've heard Evangelical Christians refer to themselves as "perfected jews." The whole thing seems to boil down to how Christianity lets Gentiles believe in the Jewish God without having to go through all the trouble of converting to Judaism. Sort of a way to get past the velvet rope without having to bribe the doorman.
I'm not too concerned about this. What does concern me is how Evangelical Christians are starting to Christianize Jewish traditions. Christianity has a history of christianizing other religion's traditions while simultaneously denigrating the religion the tradition came from. I see it happening with Evangelicals already having bar mitzvahs and wearing prayer shawls. What's next?
My guess is the holidays. Some already celebrate Passover, which seemed obvious since the Last Supper was supposed to be a seder. But the next step is Christianizing Passover. And what better way to do that than Bacon Matzah. Gentiles love bacon so why not spice up that boring slab of unleavened bread with the glory of bacon? Next on the list would be to celebrate Rosh Hashanah with an Apple and Honey Milkshake.
But why stop with the holidays? Since there are Christian schoolbooks showing Jesus riding a dinosaur, the idea of Jesus being a time traveler has already been established. Instead of putting the pressure on the New Testament to show that Jesus fulfills the prophecies of the Old Testament, just rewrite the Old Testament with Jesus already part of the history of man.
Think about it, the Jews enslaved in Egypt because they wouldn't forsake Jesus. The Jews commit suicide on Masada rather than give up their love of Jesus. Judah Maccabee and his men fight the Selecuid army for the glory of Christ. Jonah is swallowed by the whale for refusing to be baptized.
The sad part about all this joking around is that it could easily happen.