Couldn't you just as easily describe this in the other way? Christianity is a large religion, just because some behave a certain way, doesn't mean all subscribe to those ideas.

In my experience there are a lot of Christians who are utilitarians, a lot who are consequentialists, a lot who are deontologists. Groups like this exist because there are people struggling to integrate new ideas or new combinations of old ideas into their existing belief structures. This is how all religion works.

A lot of EA is just straight-up utilitarianism, and appears in practice to suffer from the same problems as that framework. Christianity works similarly. There are a lot of high-minded ideals (that may conflict with each other), some people argue over which ones are "true", but in practice many people choose for themselves a subset that allows them to make sense of the world, or end up rejecting the label because they cannot make sense of their lives under that umbrella of ideas.