So I think this is no longer a "theory" because Fujino himself admits it.This is an old theory in Chinese forums: Fujino projects himself in this game that he is Inoda, so every time Inoda wins = Fujino wins.

I'm not sure if people pay attention to what this rooster says. Not sure if the English translation is accurate enough. But the Chinese version must be the most accurate because it's Fujino's native language.
The underlined sentence means (literal translation): "In the process [of making this game] I become more and more like [love/fond of] Asuna this character, and feel I become more Inoda-lized [= I become Inoda myself]".
I think now it's clear. There's no need anymore to say why Inoda is always lucky or why he is made almighty in the story. Because the creator immerses himself in the role of Inoda.
So no surprise if Inoda takes everything and end up with a pig harem.