No. Your idea is entirely based on conjecture. For starters, there are images similar to Majora all over the place. Second, even if there were reason to believe his mother was Majora, (no idea what that could be) any good theory falls flat on it's face when you add extra, pointless, and unfounded info, such as anything you just said involving the Fierce Deity.

Edit: No to the theory, I agree that he has potential to become better.

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I'm only arguing so we both see all the options, I do not believe all the things I say.