Exactly why would the official players' guide not be considered canon if it was made by Nintendo?

Also, if the Player's Guide on ALttP was trying to explain the LoZ/AoL storylines with those images, wouldn't they retcon the older pictures from the games? It seems to me they were trying to hint more insight on things than what the ALttP Box did or what the older LoZ/AoL manuals were limited too before.

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Quote:

Originally Posted by TheMissingLink You can have a timeline, or you can have canon, but not both . If one strictly follows the strictest form of canon, the timeline is ultimately destroyed. On the other hand, if one strives to create the most coherent timeline, the canon must be broken by corollary. It is the unfortunate world in which Nintendo has placed us, and now it is up to decide which road we shall follow: the road of truth where nothing can be created, or the road of imagination where nothing can be destroyed.

[Bomber's Notebook][Exposing the Sheikah]
[All Accounted For Japanese Re-Translations From Legends Alliance]