The main quest is utterly irrelevant and a detriment to the rest of the game.
The whole game would've been better without that main quest even existing.
And knowing what happens has no relevance to the game you play, especially since it makes the rest of the game completely irrelevant if you dare finish the main quest.
That's the point. It's meaningless to the point of it making the game worse by even existing.
And that's without the issues I mentioned originally, where while it's just utter shit, it's also really badly integrated.