I don’t get it — I live in a very conservative part of a red state, am a member of a very conservative church, travel in circles where I meet lots of other conservative Christians of various denominations, and I’ve never even heard of “Christian Nationalism — except from leftist media.
Yes - it is a made up term by the Left.
This isn’t a term, but it is similar to the reactions to the supposed “outrage” by Christians that Starbucks decided to have a plain coffee red cup instead of a red cup with snowflakes on it - saying it was an “antiChristian” move and that Christians were up in arms. No we weren’t. Nobody was. The origins of that were a single video posted on social media by one guy and it wasn’t even clear he was being serious. They used that to collectively attack all Christians to create an illusion that we were going berserk over a coffee cup that was solid red vs. red with snowflakes on it. People on social media posting how embarrassed they were of their fellow Christians acting like this, etc...running to separate themselves from people who did not even exist. People finally started asking the question: “Do you actually see anyone posting about being mad about the red cup, or just people reacting to people supposedly being mad about the red cup?” But by that point, the damage was done. The media had spread their narrative far and wide.