And yes, the wiki is an IG source, but it is not a replacement for the game itself. The game and the wiki need to match.
This is not necessarily the case.
As the Wiki is an IG and IC source,
in some cases, it can be used for propaganda and lies. This is particularly true in newspapers, but can also happen in other parts of the Wiki.
Naturally, it must not happen in parts like the manual and help pages, which are less IC.