This makes complete sense. American religion is much more influenced by frontier Restorationism or mid-century Jesusism than it is what some dead German guy nailed to a wall nearly 500 years ago. American religious movements have largely rejected denominational labels in favor of ecumenism.
Posters who want to die on the hill that “Protestant” identity is something worth protecting can go back to their established churches an ocean away
You act like Mainline Protestants have been some historic minority and oddity in America’s history, rather than a clear majority for the vast majority of it and not that much smaller than Evangelicals now … if the whackier branches of Christianity want to have their fun, go ahead, but it seems rather strange and classless to insinuate
normal older churches are somehow “less American.” Frankly, it wreaks of a South-centric view.