I'm sure I was already told this at some point in time, but I need to be reminded. What exactly is the reason that ONLY the main series is used as a standard. The franchise as a whole has equal credibility. True, they're all based on the games, but if the games' interpretation was so sacred, then no deviation would exist to start with. The original is never the standard for anything. It always evolves, and the meaning changes, or old ideas are rejected and it is rewritten. There is very little, if anything, that is the same across all official things. If you wish to follow solely the games' interpretation, you can do so, but be aware it is not the only interpretation, and that for some, none of the canon matters and favor their own interpretation. They are free to do so as well.