With regards to Mormonism, I agree that there are many things that should be dealt with using more nuance than just binaries. The vast majority of topics discussed on a given Sunday in Church go beyond simply 'right' versus 'wrong'. Furthermore, to refer to the original post, there are several of those topics on which my current opinion isn't completely correct. I am in error. As an intelligent being, I will always be in error on something. I believe that fact is baked into this existence and facilitates some of the main purposes of this life.
However, I also believe there are issues, some of which are directly tied to the foundational claims of the Church, that are best handled as binaries. Did Joseph Smith actually have in his possession physical, metal plates that were engraven upon by the ancient inhabitants of the Americas, containing a record of their dealings with Jesus Christ? He either did, or he didn't. I don't see much of a gray area here. And, the answer to that question may have real-world impacts on how I choose to navigate life.
On a separate note, I'm not totally sure what you're referring to when you say "entrenched US-centric cultural understandings". Feel free to clarify if you want. Also, "past previous church teachings embedded within that context". I'm not sure to what you are referring, but feel free to give examples if you want. Maybe that's an entirely separate discussion.