Do religious groups in the US, specifically, Christians, talk about the history of the King James Bible? Why is it, uh, trusted by so many, when stuff like this hints at a storied construction?
I don't think it's widely trusted. Translations are hotly debated, but I think most people consider the KJV to be a poor quality translation, besides the fact that even if it had been a quality translation at some point the language has changed enough that it's no longer very helpful for a modern english speaker seeking to understand the original greek and hebrew texts.
Take for example one of my favorite sayings, Matthew 24:15-16.
ESV: "So when you see the abomination of desolation spoken of by the prophet Daniel, standing in the holy place (let the reader understand), then let those who are in Judea flee to the mountains."
KJV: When ye therefore shall see the abomination of desolation, spoken of by Daniel the prophet, stand in the holy place, (whoso readeth, let him understand:) Then let them which be in Judaea flee into the mountains:
The quotation marks in the ESV suggest that the parenthetical phrase "Let the reader understand" was spoken by Jesus. But in actuality, it is ambiguous whether that was spoken by Jesus, or whether it is a note by Matthew. Was it Jesus telling us to understand Daniel, or Matthew telling us to understand Jesus? And if it was the former, did Jesus say it knowing that someday it would be read (even though no stenographers were present) and would thereby gain a double meaning?