In Riddle's defense, he's riding that line of being considered a force of nature cuz you figure he's more a personification of primal instinct, but is intelligent enough to have it be a personal threat as well. Calamity Ganon actually probably falls under a similar blend, but the whole deal...
What tragedy? If you wish to examine the possibility that this 'host body' may not be Ganondorf's original body, the thing separating it from being a theory and fanfiction is a willingness to examine all possibilities as opposed to zeroing in on one thing without considering the others...
So? You're not Nintendo, so you can't say with certainty that your plot is their plot. You could have a full game pitch, and that doesn't make it any more official. Nintendo didn't write it.