My least favorite take is the "Christian Nationalism" fear mongering. I've been around evangelical Christianity my whole life and I can tell you. Since the 90s at least evangelicals have been what many call "Christian Nationalist". First off most US citizens are nationalists. That's both parties. The left is less so these days. But growing up everyone was a nationalist. Christians (like me) supported Bush. I think think Trump just exposed the political priorities of Christians. They will wink at his personal immorality because in their view he is standing up to the left. He's fighting for them. It exposes the position they place politics in their world view. It is above God sadly. I had this realization in the early 2000s. Realized that politics was an idol(small g god). So, this isn't new. Its bad but for different reasons than people talk about.
I will say it is a mistake to lump all Christians and even evangelicals into one box. I know many that reject nationalism, and statism. They don't place politics in the place of God. I also know progressive Christians that do the same thing conservative Christians do. They are just blind to it. It is interesting, if you look at the progressive era and specifically Woodrow Wilson you see the other side of Christian nationalism. The social gospel. Wilson's "faith" was a driving force behind his "making the world safe for democracy" thing. Its my view that he was a massive factor in setting up Hitler's Germany. But that's a thread for a different day.