It still does in some contexts. There is no singular "Christianity" there are a MYRIAD versions and the are not cookie cutters. But their American assumption is that belief and faith are now intellectual (do you BELIEVE in climate change). Much of that is protestantism also: enlightenment philosophy

If you did not believe dieting is protestantism by other means before, get a load of the woman trying to convince me to drink artichoke water to "clean" my gallbladder

Judge Dredd also depicts a future substantially brighter than the one we now have available to us, inadvertently proving 1980s UK satirists structurally favour Protestantism

The idea of any sect in American Protestantism having "moral authority" that other sects acknowledge is funny given how common it is in the US for a sect that is made up of only one church (not "church" as in "sect" but literally one congregation) to have a disagreement and then have a schism.

I suspect this framing will have greater predictive power than if you take them to either be a natural outgrowth of American low-church Protestantism OR a departure from it in everything but name.

I wonder (and no more than wonder) if we're seeing some kind of romantic nationalism acculturated in an American context that requires it to take on the idiom and practices of evangelical Protestantism. That, to me, seems like the nearest description of what we're seeing.

The temptation would be to see this as yet another syncretism between American civil religion and Protestantism, but I don't think that's right: this violates too many American civil religious precepts.

My Dad, who could trace back multiple generations on each side to a wide variety of UK Protestant ancestors Before Protestantism Was Cool (1528), was according to a DNA test 11% Sephardic Jewish. It's not impossible, of course, that somebody married somebody along the way - but it raises doubts.

Alternatively "Protestantism has no tradition" My local (Protestant) church uses a building 1000 years old

There is a strange, enduring stereotype that Protestantism doesn't engage in any intellectual or philosophical analysis of Scripture, which is historically absurd. Even American fundamentalism engages intellectually with the Bible, they just do it in farcical ways