Tepid take but american "Christianity" is anything but. They completely disregard the teaching of JC and are literally heretical in their beliefs. It's the worship of Mammon and the American settler project.
I'm sure there are still some people who live by Jesus's teachings (love thy neighbor as yourself, judge no lest you be judged, compassion for the downtrodden, acceptance of those ostracized by society, beating bankers with a whip, etc) but mainstream "christianity" in America needs a seperate term. Americanity? Americanism?