Instead of treating these as religious or literary texts, let alone "historical documents," we should be treating these as something akin to modern-day folk mythology with all the inconsistent details and variations in interpretations that such art and storytelling entails.
I just treat them as shows and entertainment. Why does the Enterprise interior look different? Umm..one is a show made in 1966 and another is a show in 2022. It's the same Enterprise in-universe, but this piece of fiction was filmed decades apart so it looks different.
Why are the Trill in DS9 completely different from how they were presented in TNG? They even look different and the symbiote takes over the host? DS9 must be in a different timeline or a reboot? Nah, it's a show and new writers came up with a different concept and look for the trill and retconned out the old one.
TOS talks about money and Starfleet officers getting paid and Genesis is seeking funding from the federation but in Star Trek IV and TNG there is no money in the federation. Is everything from Star Trek IV onward also in a different timeline from TOS?