All of this stuff is unlikely to come up often if at all. While it allows a creator to add depth to the world and the things we make for it, all of these "stuffs" are not going to be overtly explicit in our stories or modules or whatever. Unless of course the plot deals with them directly, but even then I don't think their "believably" will be called into question. The amount of stuff going on here is only noticeable because we are dealing directly with it in creation and in its definitions. Not many people read encyclopedias cover to cover. And fanatics who are obsessed with minor continuity errors and slight realism errors in a fantastical world are pretentious and silly.