Re: The non-cannon cannon series:
I understand what you mean, now.
Originally Posted by Curteth
In a way - you're right. Except that the anime is based largely around an incomplete manga. If the manga were complete, then the anime adaptation would be able to work in a lot of extra content that can feel like it is part of the original storyline (because it has effects later on down the road).
Since it is incomplete - we see a lot of things that are never referenced later in the story - or character development that was shown in the anime early on, but then the manga still operates off of the 'old' character to show development. Or, in some cases - you get absolute catastrophes, such as a few of Bleach's filler arcs that... while excellent story arcs in and of themselves - ended up contradicting several key plot developments in the manga (and later the anime adaptation of those manga plots).
That's why, in series as long as these, a lot of the non-canon events are just completely irrelevant because they won't impact later events unless the anime decides to break step with the manga (such as with Death Note).